right now, i want to go to cnn's kaitlan collins with her new reporting from the white house. so what are the president and his team doing tonight in response to this first-known case? >> well, anderson, ever since south african scientists last week told them they thought that this could be a more concerning variant than some of the other ones that you have seen, the president and his team have basically been meeting nonstop. whether that's within the agencies, people meeting and talking about how they are going to respond to this. or the president meeting with his medical team directly. they have had hours on ends of meetings where he has been peppering them with questions about the data here, the timeline of when they are going to know more to those big questions, like how severe of disease this could cause or whether or not it evades vaccines because the president has been clear that he wants to know more. and of course, anderson, today it was the day that his medical team delivered him that grim news that yes, they had found the omicron variant here in the united states. and they had been bracing for that for several days. i think they had been talking so publicly about the expectation that it was already here so it wouldn't catch people off guard. and of course, now that it is here, they believe they will see more cases of the omicron variant. and so, you see that happening on a bigger level. the president meeting with his team. of course, the cdc also meeting with state labs talking to them every day because that's how they find these -- these variants. and so, that's been happening. of course, all of this leading up to a big speech that president biden is giving tomorrow to talk about what's ahead in the coming months. >> do -- i mean, what might they do? do we know? >> i think in the speech tomorrow, you will see the president lay out some concrete steps. the white house has been preparing that. i don't think you should expect any more travel restrictions, per se. of course, that is something that dr. fauci even said today was talking about. of course, the criticism that they have gotten that they don't really add much value. that's from health experts who have said that. but you could see other steps. you know, there are questions about the mask mandate that's in place when you get on a plane, on a train, any of those mass transits. steps like that could be taken, as well. but fauci said today he doesn't expect there will be anything like required testing for domestic flights. that's been something people have raised a question about. not testing, vaccinations for domestic flights. he says he does not think that is something that will be helpful. but overall, you are going to see them also just talking about the message here because still, though will be thursday and it's several days we have been talking about this variant, they are still trying to learn a lot more and they don't think it will be until next week, anderson, that they have a better grasp on that. >> is it clear the white house has learned lessons from the chaos caused by the delta variant over the summer? >> i think so because the delta variant, remember, came at that time they had that big fourth of july celebration here at the white house. the president was talking about getting close to this independence from the virus. people were taking off their mask and of course delta then swept across the united states in a pretty vicious manner. and so i think they are being extra cautious here and that's why you saw them put those travel restrictions in place. that's why you see them pushing boosters like they are because the reality the white house says is there are 100 million people in the united states right now that have not gotten a booster. and we should note this person who tested positive from south africa went to san francisco. they had also not gotten a booster shot yet. and so that's also an avenue that the white house is using this for is to try to push for that as well. something, of course, lessons left over from the delta variant that are kind of looming over how they are responding to this variant. >> kaitlan, appreciate it. kaitlan collins. perspective now from dr. richard besser, former acting cdc director and currently president and ceo of the robert wood johnson foundation. with us as well my co-host for tonight's upcoming cnn town hall at 9:00 p.m., cnn chief medical correspondent dr. sanjay gupta. dr. besser, so in light of this case in the u.s. which was inevitable, how do you think the cdc is handling all this behind the scenes right now? >> well, you know, anderson, i think the steps that are being taken, being aggressive until we know more, is the right thing to do. it's -- you only have one chance to get ahead of a newly spreading strain of a disease. and, you know, i'm -- my -- my hope is that we will take these measures. people will up their game to protect themselves, and when we learn more, hopefully we'll learn that -- that this is not the -- the dangerous strain that eludes vaccines that we're concerned it could be. but you want to take the steps upfront, and not hope that that's the case. you want the science to prove that the measures that you are taking are appropriate or can be eased up. >> sanjay, as we reported the first omicron case in the u.s. was someone who had recently traveled to south africa. do you have any sense or estimate of how soon we could see, sanjay, community spread from that infection? >> well, so far, i mean, you know, they are doing contact tracing and all the contacts have -- have tested negative. i think there will likely be some community spread because we know that this is obviously a very contagious virus. but, you know, if we show what's happening in south africa -- i don't know if we can show that -- show what has happened throughout this pandemic. you see different sort of surges of the virus. you had the original variant. you had beta. you know, beta right in the middle of the screen. that became the dominant strain, anderson, in south africa for a period of time. it did not become the dominant strain here. so, you know, it -- it doesn't mean, by virtue of the fact that it became dominant in one part of the country, that for certain it will become dominant elsewhere. also, at the time omicron really started to take off in south africa, they were in a relatively quiet period. so it wasn't really racing against delta at that point. so we'll see. you know, if it starts to become more dominant in the states but i don't think that's a foregone conclusion. >> dr. besser, i mean, whether it's, you know, disinformation, mixed messaging, covid burnout. do you worry that people aren't listening to the cdc as much as they might have, say, last year? >> well, you know, i'm worried that people truly do have covid burnout, covid fatigue. and i hope that the messaging that is coming from multiple sources, from cdc, from the white house, from the world health organization, from trust -- other trusted health advisers, will encourage people to do a number of things. one is pay attention. you know, wear your mask. avoid crowded indoor places where there isn't good ventilation. for people who haven't gotten vaccinated, talk to people you trust. trusted health providers and think about that because even if the omicron strain doesn't turn out to be any worse, we're losing close to 1,000 people every day from the delta variant. and that, in and of itself, is a reason for people to get boosted who were due to get boosted so if it's been six months since you have had your -- your moderna or pfizer vaccine, you should get a booster if you are an adult. if it's been two months since the j&j, you should get a booster. those things will help against delta. we don't know yet whether they'll work against the omicron. but they definitely will help save lives right now, regardless of what happens with the new strain. >> and dr. besser, what is your definition of fully vaccinated? i mean, do you still consider someone who has had the two-dose regimen of pfizer or moderna to be fully vaccinated? >> well, i think that we are going to need to consider changing what we think of as fully vaccinated. and you know, as a pediatrician, being fully vaccinated varies depending on the age that you are. and when you hit different age thresholds, it's time to get another shot. so you were fully vaccinated, and then after six months, maybe getting a booster means, you know, that booster means you are fully vaccinated. that's information that we'll learn more over time. clearly, these vaccines continue to provide protection against hospitalization and death for otherwise healthy adults past six months. but as we are seeing more breakthrough cases, those cases are a part of why we're seeing continued transmission in communities. and so it is important for adults to get their questions answered and consider getting those boosters. >> sanjay, the "guardian" newspaper is reporting that former trump white house chief of staff mark meadows says in an unreleased book that the former president tested positive for covid just three days before his first debate with then-candidate joe biden. i mean, that information was obviously not revealed to the public or to the biden campaign at the time. in fact, you know, the former president still denying that it -- you know, that he tested positive. was this a dereliction of duty by the white house physician, at the very least, sean conley? i mean, is there an obligation? the president was meeting with gold star families. he went to the debate with vice president biden. >> yeah. i mean, i think if this is true, this was really -- this was really reckless, there's no question. and from what i understand, again if this is true, the president was also symptomatic. you know, he was -- he was not feeling well. so it wasn't just an incidental sort of finding. they actually -- he was having symptoms. so yeah. this is a problem. i mean, it's challenging. you know, for a physician to reveal someone's specific health information. with regard to public health, though, you know, there is obviously, a larger obligation. most people sort of just understand that obligation. the president should have been isolated. the contacts that he had when he had tested positive should have been traced and they should have been tested. so, you know, this was something that was very clear from the cdc's guidelines. the administration's own guidelines. and again, if this is true, those guidelines weren't followed. people were put at risk, including the patient, the president. and also a potential future president at that debate. >> dr. besser, i mean, i don't -- i mean, there -- this has been discussed for a while. the idea that mark meadows is actually saying it happened in his book, according to the "guardian," does it -- i mean, how bad is this? >> well, you know, i'll stay out of the politics of it. but anyone who has symptoms of covid should get tested before they're, you know, in a public setting where they could put other people at risk. and anyone who tests positive should follow the cdc guidance and that means isolating away from others so that you are not putting additional people at risk. and contact tracing is a critical piece of controlling spread. so viruses don't care about what job you have. viruses are equal-opportunity assailants. and it's very important that everybody do what they can to protect not just themselves but those around them. >> dr. besser, thanks. sanjay, i will see you at the top of the next hour for tonight's town hall. we will have reporting from south africa where the new variant obviously was first spotted. also, dr. anthony fauci joins us along with the president of vaccine maker moderna. public health expert dr. leana wen as always will be taking your questions from here and around the world. that gets underway at 9:00 eastern on cnn. coming up next, though, in this hour what we are learning in the wake of yesterday's school shooting about red flags that school officials apparently had about the alleged killer's behavior the day before the shooting. also, video evidence authorities recovered from his phone. and what we are learning about the four young lives that were stolen in a community, as you might imagine, that is deeply shaken tonight. later, we will also talk to senator chris murphy of connecticut in the wake of the sandy hook shooting, he has dedicated himself to reducing gun violence. we will talk about the impassioned speech he made last night on the senate floor directed at his republican colleagues after this latest tragedy. >> in the dark sunflowers will turn to each other to find each other and find the light. and i think it's clear in trans people, people living with hiv, that's what we do. sometimes literally. right? at nighttime finding people at bars and clubs. underneath the cover of darkness in various ways. and i feel like that's the kind of work that i want to do, right? finding the light even when it seems impossible. >> when you give somebody an hiv diagnosis, it's rough. when i got my hiv diagnosis, it was not good. part of my work is to make sure no one ever has to go through that again. 1993 is when i was diagnosed. so this dude tells a 26-year-old kid pretty much you're going to die. and i was pretty devastated. >> you're trapped in your own head. so everything and everyone starts to blur. but i don't know. >> paul? let's hold there. >> isolation for people who live with hiv is a huge problem. i want people to be able to see what thriving with hiv looks like. especially young black gay men. in oxford, michigan the 15-year-old who authorities say killed four sclasmates made his first court appearance today. he was charged with four counts first degree murder in yesterday's mass shooting, along with assault and weapons charges, and a rare count of terrorism causing death. though his name by necessity is now on the criminal docket, it will not be part of our reporting. instead for a moment, we want to focus attention where it belongs on the names of the four young men and women whose lives he allegedly took and what we know about those lives. and it saddens and sickens me every time we do this because their stories and honoring their lives, which is the least we can do, is also the most it seems that anyone can do. in addition to excelling academically tate myre was a varsity football star. a friend and teammate telling cnn he was a great person, a great leader, someone who always wanted to make sure that everyone was okay and involved in everything he could. there's a petition online to rename the school football stadium after him. as of this morning, more than 48,000 people have signed it. tate myre died in a police car on the way to the hospital. he was just 16 years old. 17-year-old madisyn baldwin. she was expected to graduate this school year and had already been accepted to several colleges, some with full scholarships. her family says she was an artist who loved to draw. writing on social media today, her grandmother said "this beautiful, smart, sweet loving girl was tragically taken from us all today, leaving a huge hole in all our hearts." hana st. juliana. well, she was just 14. she played on the school basketball team. teammates tweeting today, "we'll never forget your kind -- your kind heart, silly personality, and passion for the game. this season," they wrote, "we play for you, hana." and justin shilling, who died this morning, worked at an area restaurant chain that employed many students from oxford high. the company put out a statement today -- here is some of it. "justin was an exemplary employee, devoted friend and co-worker, co-captain of his bowling team, and simply a pleasure to be around." justin shilling was 17. seven others, six students and a teacher, were shot and wounded yesterday and our thoughts are with all of them and all those families in pain tonight. you will not see the suspect's face on the program tonight. but you will hear the evidence authorities have as to what the suspect did and said leading up to the shooting, and during it. as cnn's adrienne broaddus reports, some of it is potentially damning, not to mention horrifying. >> reporter: the suspect appeared virtually in court, as police described the shooting and his attorney asked the court to enter a not guilty plea on his behalf. >> he methodically and deliberately walked down the hallway aiming the firearm at students and firing. right outside the bathroom he began firing, judge. this continued on for four or approximately five minutes. the defendant went to another bathroom. as deputies arrived, he set the firearm down and he surrendered. >> the suspect's parents also watching the proceedings via video as police detailed videos the suspect recorded on his cell phone and his journal writings. >> the night before the incident, wherein he talked about shooting and killing students the next day at oxford high school. further, a journal was recovered from ethan's backpack also detailing his desire to shoot up a school, to include murdering students. >> reporter: the oxford, michigan, school student shot 11 people on tuesday, killing four. after a meeting with his parents and school authorities earlier that same day. we were with the pitman family learning about one of the victims, tate myre, from his friend javan. >> tate's probably the most -- best person i'll probably meet besides my dad and besides god. tate was always -- he's smart in class. me and him used to joke around. me and him used to play. >> reporter: and then news another classmate died. >> justin. justin. no. i knew justin. >> that was his boy. >> javon described calling his dad during the shooting. >> i was whispering because i didn't want the shooter to hear me and my classmates and my dad was just asking what's going on? what's happening? and i told him it's a shooting. somebody's here shooting up the school. and then, he told me, he said, okay, i'm on my way. >> why your dad? is he your superhero? >> yes . >> you can't save your kids. that's devastating. i'd have rather been the one that got shot than my kids. >> reporter: afraid for their lives, other students sheltered in their classroom. barricading the entry. refusing to open the door for authorities. >> we are not taking that risk right now. >> reporter: and then escaping through a classroom window, following the training they never wanted to use. when police took the suspect into custody on tuesday, he still had 18 rounds of ammunition. tonight in oxford, michigan families are now left with a nightmare that for some will never end. >> i'm turning off the light and i have my kids. but sherry and buck don't have tate. they're in the room but there are some parents that that room is going to be empty. >> adrienne broaddus joins us now from oxford. what more are authorities saying about the suspect's parents? >> reporter: anderson, we learned the suspect's father purchased the gun that was used in this shooting four days prior. earlier today during a news conference the prosecuting attorney said the suspect's parents could face charges. when cnn pressed, asking if there was evidence to support those potential charges, she didn't go into detail. but late this evening she did say it is important for gun owners to properly secure their weapons. and i'm paraphrasing there. meanwhile, you saw in that story the pittman family was vulnerable with us. they are struggling right now with forgiveness. if you walk into their home, you'll notice they are christians. bible verses hang on the wall. javon pittman said he is going to miss his two friends. it was tradition for him and his varsity teammates -- they all play football together -- every thursday, they would meet at tate's home for dinner ahead of their friday night football games. and this is their senior year, a time when those students are supposed to be creating the most memorable moments. but what happened inside of this high school is something they say will haunt them forever. anderson. >> adrienne broaddus, i appreciate the interview. thank you. joining us now is michigan attorney general dana nessel. madam attorney general, appreciate you being with us. sorry it's under these circumstances. what more can you tell us about the charges that this shooter is facing, particularly the terrorism charge? can you walk us through how michigan state law defines that in a situation like this? >> well, first of all, thank you for having me. i will say this, anderson, i've watched you for years talk about mass shootings at high schools and other schools around the country, always dreading the day that it would come here to michigan. and -- and now it has. but i feel like that was pretty much inevitable given the fact that we have such lax gun laws here in the state. and i echo the concerns of prosecutor mcdonald in saying we have to do better by our children. and we have to start caring more about our kids than we do our guns. and unfortunately, that hasn't happened yet. but you know, you had this young man and he has been charged as an adult. he faces a litany of charges. he faces, obviously, four counts of premeditated murder for the kids that he -- that he killed. and then an additional seven counts of assault with intent to murder and several felony firearm charges where you use a firearm in the course of committing a felony. and one charge of terrorism causing death, which is like premeditated first-degree murder, a life-offense felony normally. although juveniles are no longer eligible for life without parole and that's just not in michigan but in the whole of the united states. so obviously, he's facing a lot of very serious charges. >> so a terrorism charge, it has to do with the premeditated nature of a crime? >> yeah, that's correct. it's when you knowingly, willfully, or in a premeditated manner, commit a -- either a homicide or an assault with intent to murder. or some other violent felony. and that you commit such an act knowing that it's your intent really to, um, to cause fear and to threaten civil population or to influence or affect government in some way. and a school, of course, is a unit of government. so, you know, it's a charge we don't see very frequently but it seemed very applicable in this instance. >> do you have a sense of those -- of how those who were wounded, how they are doing tonight? >> i think that those kids are in varying conditions. some of them are seemingly, you know, starting to be on the mend. and others are in critical condition. so, i'm certainly hopeful that we don't lose any more kids than, of course, the last, you know, child that died this morning. but we really just don't know at this point. >> michigan attorney general dana nessel, i really appreciate your time tonight. thank you so much. >> thanks for having me. the most serious challenge to roe v. wade in decades was heard today by the supreme court. the future of reproductive rights could be at stake if justices greenlight mississippi's ban on abortions after just 15 weeks of pregnancy. the conservative-leaning court appears to be leaning in one direction already. we'll assess the potential historic implications next. we can help actively repair enamel in its weakened state. it's innovative. my go to toothpaste is going to be pronamel repair. introducing the all-new gillettelabs with exfoliating bar. it removes unseen dirt and debris before the blades, for a shave as quick and easy as washing your face. ♪ ♪ baby got back by sir mix-a-lot ♪ unlimited cashback match... only from discover. 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[screams and laughter] yeah! xfinity brought us together after all. get started with xfinity internet and ask about wifi speed fast than a gig. click, call or visit a store today. switching wireless carriers is easy with xfinity. just lean on our helpful switch squad to help you save with xfinity mobile. they can help break up with your current carrier for you and transfer your info to your new phone. giving you a fast and easy experience that can save you hundreds a year on your wireless bill. visit your nearest xfinity store and see how the switch squad can help you switch and save. it's the xfinity black friday sales event. learn how to save up to $1000 on select phones by visitng your local xfinity store today. roe v. wade has been settled law since 1973. it was reaffirmed in 1992 in the case of planned parenthood v. kasie. it hasn't faced a test this big until now. a potentially historic day in the supreme court today. justices heard arguments on mississippi's new law that bans abortion 15 weeks into a pregnancy, long before the viability line set by a prior precedent of around 24 weeks. the 6-3 conservative majority of the supreme court appears poised to uphold the ban. chief justice john roberts said mississippi's limit of 15 weeks was not a, quote, dramatic departure from viability. other conservatives on the court like justice brett kavanagh appear to be leaning that way as well. >> if we think that the prior precedents are seriously wrong, if that, why then doesn't the history of this court's practice with respect to those cases tell us that the right answer is actually the return to the position of neutrality. >> meanwhile, texas's ban on abortions after six weeks remains in place until the justices issue a ruling that may not come until next summer. i want to discuss the high stakes with former texas state senator wendy davis and cnn chief legal analyst jeffrey toobin. senator davis, i'm wondering what your impressions were after hearing the arguments today. >> you know, anderson, when the hearing began, i went into it feeling like we probably were going to learn that a majority of the justices were leaning toward upholding that 15-week ban but otherwise leaving the protections of roe in place. and i have to say after listening to the arguments today, i am much more concerned that roe is actually going to be completely gutted with a return to state law directing what will happen for women's reproductive freedom going forward. >> and jeff, i mean, do you agree with senator davis on that? >> boy, i sure do. anderson, i have been to a lot of supreme court arguments, i have listened to a lot of supreme court arguments. i have never heard one where the stakes were clearer and the tension was greater. even though i wasn't -- you know, i could only listen by audio because the courtroom is still closed, largely because of covid. you know, everyone understood in that courtroom that roe v. wade was on the line. and, you know, the three liberals talked about the precedent and stare decisis. but i thought that quote you read from brett kavanagh, justice kavanagh, suggested that they just want to get rid of the whole thing. they think roe was wrongly decided. and chief justice roberts actually was trying to look for a way to uphold the law but not to overrule roe altogether. and he didn't get any support from any of the five other conservative justices. >> well, jeff, can you just explain when justice kavanaugh was talking about a return to neutrality, i mean, some of the language was confusing to me. what does he mean? what is he talking about? >> what he means by neutrality, the mississippi solicitor general i thought explained this very well. he basically said, look, abortion is complicated. abortion is controversial. the way we deal with problems is leave it up to the voters. leave -- let the voters decide whether we should ban abortion or allow abortion, so that the constitution would be neutral. that's what he meant by neutrality. the problem with that is, in our system, the constitution is not supposed to be up for election every two years in state legislatures. the constitution says we have freedom of religion regardless of what the legislature does and that's -- that's the core of the dispute about roe v. wade. >> senator davis, what kind of an impact do you think the mississippi law and the arguments today of the court would have on the law in your home state of texas that effectively banned abortions at six weeks? >> i mean, the mississippi law obviously would be a better situation than texas finds itself in today. but as i said a minute ago, i really don't think that's where we're going to wind up. i think we are going to see an absolute overturning of roe v. wade and we already know what that looks like essentially in texas with the six-week ban that's been in place since september the 1st. i was surprised actually when the court handed down some rulings a week ago and texas's situation wasn't on their agenda. and i believe that that is the case because these justices, a majority of them, aren't concerned about the absolute interruption of abortion rights in our state because they're headed to an absolute interruption in any state that chooses to do so. with the flippant idea that somehow because we have contraception available that should make everything okay. when we know that that absolutely doesn't. and, you know, what was disappointing to me today was how flippantly almost the court was able to shove aside or cast aside this idea that this right to personal liberty and the denial of that liberty that will be occasioned upon women who live in states that are opposed to abortion. the challenges that they are going to face as a consequence of being denied that liberty. but somehow that simply just didn't matter. >> and think about what amy coney barrett said at one point. she said, you know, adoption is getting easier. we have laws to make adoption easier. so, you know, women can just take their pregnancies to term and put the kids up for adoption. as if forcing women to take pregnancies that they are -- that they don't want, whether it's rape, incest, or some other reason, just, you know, put them up for adoption. that's the solution. imagine telling the women of america that abortion -- you can only put children up for adoption. it was an amazing moment to me. >> whenever there's been a supreme court vacancy in recent years, we always end up talking a lot about pro-choice republican senator susan collins. i want to play what she said back in 2018 when now-justice kavanaugh was up for confirmation. >> we talked about whether he considered roe to be settled law. he said that he agreed with what justice roberts said at his nomination hearing, in which he said that it was settled law. >> senator davis, sure didn't sound that way today, did he? >> no, he absolutely didn't. and in fact, he's taken great pains to sort of forecast what his feelings about stare decisis are and whether settled law actually is something the court should adhere to and he has written out a number of qualifications or criteria by which he believes that we can overturn settled law. even something as settled as, of course, roe v. wade has been for the last few decades in this country. >> wendy davis, jeffrey toobin, appreciate it. thank you. the fight over reproductive rights is flaring again on the hill. so is the battle over gun control. both political obviously lightning rods. colliding at one point yesterday in a passionate speech in the senate. we're back with the lawmaker who delivered it next. ♪ there are beautiful ideas that remain in the dark. but with our new multi-cloud experience, you have the flexibility you need to unveil them to the world. ♪ feeling sluggish or weighed down? it could be a sign that your digestive system isn't working at it's best taking metamucil everyday can help. metamucil psyllium fiber, gels to trap and remove the waste that weighs you down. it also helps lower cholesterol and slows sugar absorption to promote healthy blood sugar levels. so you can feel lighter and more energetic metamucil. support your daily digestive health. and try metamucil fiber thins. a great tasting and easy way to start your day. hey, it's ryan reynolds, owner of mint mobile with a holiday offer i think that you're going to like. when you switch to mint now, you'll get three months of premium wireless free on any plan, even unlimited. yeah. even unlimited. that's right. while the big wireless companies spend billions on holiday ads luring you into expensive contracts, we spent $79 on this stock video so we can afford to give you stuff for free. you gotta be into that, right? yes, you can't resist savings. if you have this... consider adding this. an aarp medicare supplement insurance plan from unitedhealthcare. medicare supplement plans help by paying some of what medicare doesn't... and let you see any doctor. any specialist. anywhere in the u.s. who accepts medicare patients. so if you have this... consider adding this. call unitedhealthcare today for your free decision guide. ♪ - san francisco can have criminal justice reform and public safety. but district attorney chesa boudin is failing on both. - the safety of san francisco is dependent upon chesa being recalled as soon as possible. - i didn't support the newsom recall but this is different. - chesa takes a very radical perspective and approach to criminal justice reform, which is having a negative impact on communities of color. - i never in a million years thought that my son, let alone any six-year-old, would be gunned down in the streets of san francisco and not get any justice. - chesa's failure has resulted in increase in crime against asian americans. - the da's office is in complete turmoil at this point. - for chesa boudin to intervene in so many cases is both bad management and dangerous for the city of san francisco. - we are for criminal justice reform. chesa's not it. recall chesa boudin now. this next story brings together the two stories we just talked at about, the mass shooting in michigan and the abortion arguments heard before the supreme court. democrat chris murphy posted this on twitter. "driving home tonight i thought about the republican floor speeches tonight on the sanctity of life and how this concern for life apparently doesn't extend to the kids who were shot today in a school in michigan. so i turned the car around and went to the senate floor." when the senator got there, here's part of what he said. >> do not lecture us about the sanctity, the importance of life when 100 people every single day are losing their lives to guns. when kids go to school fearful they won't return home because a classmate will turn a gun on them. you care about life? then get these dangerous military-style weapons off the streets, out of our schools. this is a choice made by the united states senate to sit on our hands and do nothing while kids die. >> senator murphy joins us now. what's the response been to your speech? obviously, you have made impassioned speeches before. you have worked on these issues for a long, long time. do you ever get the feeling that it doesn't have an impact? >> oh no, i think it all has an impact because we are building a social change movement, right? and every social change movement over the course of american history has to have the long view. it hits obstacles, failures before it achieves success, and that's what the modern anti-gun violence movement is. i'm not sure that i changed the minds of any of my republican colleagues with that speech yesterday but what i am most worried about, anderson, is this country, people of good will, people of conscience just start to normalize these shootings. start to believe that we have to accept two mass shootings every single day. many of these high-profile school shootings as part of the american landscape. it's just not true. it doesn't happen anywhere else other than the united states. it is a choice. there are policies in place that allow for this to continue. and my biggest worry is that we will lose this fight eventually because people decide that it's just part of the admission ticket to being an american, and that's just not true. >> you focus on what you see as the disconnect between in the argument for the sanctity of life when it comes to abortion rights. and then not applying in the same way to the killing of kids. >> yeah. i mean, it certainly appears that republicans give up on kids once they're born because there are 100 people every single day dying from guns. a rate ten times higher than any other high-income nation. but i also look at how cavalier republicans have been about covid. i mean, the fact that they are right now, as we speak, threatening to shut down the government because joe biden has vaccinated too many people. 700,000 people have died and yet they don't seem serious about actually getting this thing under control. so i do get angry when i hear republicans lecturing us on the sanctity and importance of preserving life. and then they do nothing when these kids are being murdered all over the country every single night. it's totally inconsistent. >> it's been remarkable. i was watching a demonstration here in new york of city workers who didn't want to be vaccinated. and a lot -- it seemed like a lot of mostly men and a lot of the signs are about, you know, you can't tell me what to do with my body. which were, you know, given the context of the debate we've seen over abortion rights, it's really interesting to see that same argument being used by people who are, you know, talking about vaccinations. >> yeah, republicans, you know, hate big government until it's a question of what a woman can do with her own body. then all of a sudden the government needs to make decisions for people. i mean again, these are -- these are two issues that stand right next to each other. republicans say that when it comes to vaccines, every individual should have control over their own body. the government has no business to tell you what to do. but when it comes to abortion, no individual should have a say over what happens to their own body. the government should be able to prescribe what you can do and what you can't do. none of it makes sense together. but that does not seem to bother the modern republican party. the hypocrisy is noted by others but of no concern to those who seem to bring the arguments to the floor. >> i want to play another moment from your speech last night on the floor. >> it doesn't even involve any political risk. the changes we're talking about in order to make our schools safe places, they are supported by the vast majority of americans, republicans and democrats. and yet the gun lobby and the gun industry is more important to half of the members of the senate than is the safety of our kids. and that is infuriating. >> do you think the gun rights issue has become an even bigger rallying cry for republicans since the former president got into politics? >> it's a good question. i think the gun lobby has always been strong inside the republican party. certainly, donald trump did nothing to break that grip. but this is a symbiotic relationship, in which the republican party has become a one-trick pony. all they talk about is how much they hate government. well, the best way they can translate how much they hate government is to argue for the ability of the citizenry to arm themselves in order to overthrow the government. and so the gun lobby relies on the republican party. republicans rely on the gun lobby. and at some point that party will recognize that 80% of the american people don't agree with them. they want things like universal background checks. the vast majority of americans want a ban on assault weapons. but that relationship between the republican party and the gun lobby, predating donald trump, is still one that we have yet to break. we will. i mean, it's just a question of when, not if. we just have to get stronger and stronger as a movement. >> senator murphy, appreciate your time. thank you. >> thank you. there is a new contender in pennsylvania's crowded republican u.s. senate race. dr. oz. the surgeon and tv show host who's given some questionable medical advice over the years. why he says he's running, next. ♪ superpowers from a spider bite? 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[beep] i just wanted to say... ♪ find yourself in these situations and see who you are. and that's just part of the bargain. ♪ for people living with h-i-v, keep being you. and ask your doctor about biktarvy. biktarvy is a complete, one-pill, once-a-day treatment used for h-i-v in certain adults. it's not a cure, but with one small pill, biktarvy fights h-i-v to help you get to and stay undetectable. that's when the amount of virus is so low it cannot be measured by a lab test. research shows people who take h-i-v treatment every day and get to and stay undetectable can no longer transmit h-i-v through sex. serious side effects can occur, including kidney problems and kidney failure. rare, life-threatening side effects include a buildup of lactic acid and liver problems. do not take biktarvy if you take dofetilide or rifampin. tell your doctor about all the medicines and supplements you take, if you are pregnant or breastfeeding, or if you have kidney or liver problems, including hepatitis. if you have hepatitis b, do not stop taking biktarvy without talking to your doctor. common side effects were diarrhea, nausea, and headache. if you're living with hiv, keep loving who you are. and ask your doctor if biktarvy is right for you. after hinting more than a decade ago that he would consider running for office, television personality and long-time new jersey resident dr. oz is gearing for a career change running for a u.s. senate seat in pennsylvania as a republican. he says the pandemic motivated him to run. dr. oz writes in a "washington examiner" op-ed, quote, the arrogant close minded people in charge closed our parks, shuttered our schools, shut down our businesses and took away our freedom. dr. oz gained popularity as the doctor who made regular appearances on oprah. then, he landed his own tv gig where he came under fire for making controversial and fabricated claims about medical cures. tonight, randi kaye has the story. >> reporter: his audiences watch in awe as dr. oz pushing miracle treatments or cures that often lack medical evidence to back them up. >> and i've got the number one miracle in a bottle to burn your fat. it's raspberry key tone. >> we're kicking it off with what i believe is one of the most important discoveries we've made to help you burn fat faster. green coffee bean extract. >> reporter: dr. oz also once claimed putting a bar of lavender soap in your bed can help prevent restless leg syndrome, but there is nothing like his showmanship for his rapid belly melt demonstration. he used it to promote another questionable fat burning product he called lightning in a bottle. this is what it does to your belly fat. whoa. and as it burns it away, what's left behind? >> muscle. >> muscle. >> reporter: more recently he made claims during the pandemic that critics called medical misinformation. >> i would take it myself if i was having issues with the virus. >> that's dr. oz speaking with larry king last year about using the controversial antimalaria drug hydroxychloroquine to fight the coronavirus, remarks that he later walked back. >> because it's believed to be so safe, it's used widely and it turns out that it might have an effect against this virus. >> reporter: the fact is the cdc has noted the drug's efficacy to either prevent or treat this infection are unknown. it's warned that unsupervised use can cause serious p health consequences, including death. >> i think we've got to be careful that we don't make that majestic leap to assume that this is a knockout drug. >> reporter: and last year, dr. oz made comments that were interpreted to mean that 3% total mortality due to covid was worth the cost to some to reopen schools. >> i just saw a nice piece arguing that the opening of schools may only cost us 2 or 3% in terms of mortality. oz later said he misspoke. a 2004 study found that of 40 randomly selected episodes from oz's television show his health recommendations were based on evidence just 46% of the time. the following year, a group of doctors and professors sent this letter to columbia university's dean of medicine asking him to remove dr. oz, who is a trained heart surgeon, from his faculty position. the group cited oz's egregious lack of integrity by promoting quack treatments and cures in the interest of personal financial gain, something dr. oz later denied. columbia stood by him. but in recent years dr. oz has had to answer to a senate committee which also questioned his advertising of unproven weight loss products. >> i don't get why you need to say this stuff because you know it's not true. so why when you have this amazing megaphone and this amazing ability to communicate, why would you cheapen your show by saying things like that? >> i recognize that oftentimes they don't have the scientific muster to present as fact. >> reporter: if dr. oz has his way, he'll soon trade television for the u.s. senate and likely work with some who already question his ethics. randi kaye, cnn new york. >> thanks so much. joining me and dr. sanjay gupta right after a quick break for cnn global town hall. dr. anthony fauci is our guest who will be taking your questions. stay with us. all year to com. it worked! happy holidays from lexus. get 1.9% apr financing on the 2022 es 350. ♪ look, serena williams... matrix... serena... matrix... serena... matrix... ♪ get your tv together with the best of live and on demand. introducing directv stream. 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