breaking news in a cnn releases a new photo of her, what we're learning about how her cancer treatment is going add when she set to make her first public appearance since christmas. plus the supreme court striking down a ban on bump stocks, ban that was originally approved by former president trump. and the wake of the deadliest mass shooting in us history. one liberal justice warning this ruling will have deadly consequences we're gonna be joined by the democratic senator who's spearheading the bipartisan bill to permanently ban bump stocks and troubling new details about counterfeit titanium used in boeing and airbus airliners. the faa investigating how it got there. and if it makes the planes hello, i'm briana keeler alongside boris sanchez in washington and we're following these major developing stories and many more all coming in right here to cnn newsome we begin with news about the princess of wales tomorrow, catherine will be making her return to public life is a working royal after months away from the cameras to recover from cancer and the palace just made the announcement releasing this photo of the 42-year-old mother of three, the princess of wales has said that she's making quote good progress. we want to get right to our royal correspondent, max foster, live outside buckingham palace, maxon, and tell us more about the announcement and how princess catherine is doing the photo was taken earlier this week. and told it was on the winsor estate and she looks pretty well in it and they've also said to us that she will be appearing here first public engagement tomorrow. >> so as you say for the first time since christmas, she's been out of the limelight since christmas day i'm making good progress. she says but as anyone going through chemotherapy will know, there are good days and there are bad days on those bad days, you feel weak, tired, and had to give into your body resting. but on the good days when you feel stronger, you want to make the most of feeling well and my treatment is i'm ongoing and there'll be going on for a few months as well. so she's undergoing chemotherapy treatment or continues. so it's going on longer than many people expected. but at the same time, we just didn't know when she's going to appear. so they're taking each day as it comes. if she's not well enough tomorrow, she won't appear. we shouldn't read too much to that i'm told she's just going on the advice of the doctors, but she does want to get going again because she feels that's part of her treatment to get back into normal life. >> and tell us more max about what catherine will be doing in her duties tomorrow so she started working from home. >> we're told that's going to build up if she can do it tomorrow, is the king's birthday parade, which is quite a spectacular event with a full calvary going down the mile behind me to a big military parade, just at the other end of the road. so we will see her in a karatay precession with her children in the carriage with her. she'll come out of the palace huge amount of media already gathering for this event. now, she'll go up the mile in front of all the crowds and we are expecting much bigger crowds now now, as a result, their first chance to see the princess in such a long time. and then she will watch the parade from a balcony with a family should come back down the male and then she'll go into the palace and then she will appear with the wider family up there on the balcony, which is a scene that i know pretty well. everyone will be pouring how well she looks. hopefully. and the palace is really keen that we shouldn't speculate too much about how well she looks or exactly what type of cancer this is. she wants to keep that private. she feels she has a right to keep that private and she said, don't expect to see that much author, but she is going to try to come out over the summer but as i say, they're going to take each event as it comes all right. >> max, thank you so much for that update. we appreciate it and joining us now let's bring in dr. elizabeth komen. she is an oncologist and nyu langone doctor thanks for being with us. we know that catherine started what she called preventative chemotherapy therapy back in february. she revealed today her treatment is going to continue actually for a few more months. that was a bit of a headline. is that typical for preventative chemotherapy? and exactly what is preventative chemo well we don't know what she's been diagnosed with. and of course, we don't want to speculate as we know, this is a very private and personal journey in general, preventative chemotherapy is a type of treatment that we give after surgery to prevent any rogue cells that could have escaped a primary site if cancer and that's to try to prevent any recurrence. and that can vary the timing and how long that takes and what type of chemotherapy and treatment is very specific and individual both to the person and the type of diagnosis dr in her statement, the duchess says, quote, i am not out of the woods yet she describes having good days and bad days in cases where some of your patients or patients that you're familiar with have had this kind of treatment. >> what exactly does that entail? what are some of the things that they deal with day-to-day? >> well, it really depends on again, the type of cancer and the type of chemotherapy. but patients can feel fatigue. there is a psychological component to even just showing up to get chemotherapy. they can have different body changes. there can be hair loss. again, it really depends on the type but treatment, but what's most important here i think is the message of compassion. she's chosen to be private about her diagnosis. but in all of this, there's a recognition that you never know what somebody is going through. they may be having the hardest de of their life and still showing up maybe even for a public appearance you know, also when, when people are having chemo and i think you correct me if i'm wrong, i think it's almost uniformly they're immunosuppressed, so they're very susceptible to germs. they might otherwise not be susceptible to. they have to be careful. can you speak a little bit about that? well, the great thing about modern medicine today is the depending on the chemotherapy and the treatment, many patients are not immunosuppressed as they used to be. >> so we used to tell patients, you might not be able to take the subway or go to a restaurant or be in a crowd. but we have newer medications that not only prevent some of the side effects that you might imagine from movies, like vomiting or whatnot. and that also includes the prevention in some instances of extreme immunosuppression. again, it depends on the diagnosis, but not often the case that patients are immunosuppressed as they used to be. so that's a really good advance and moderate medicine. >> yeah, that's a wonderful development. most patients of course, are not members of the royal family. i'm wondering how patients in general try to balance the desire of their loved ones who want to know how they're doing with what's obviously a natural desire to maintain privacy yes. >> you know, i treat patients from all walks of life and all backgrounds and all socioeconomic experiences. and i will tell you it is a very individual experience. there may be some celebrities that are very vocal about what they've been through and some that you would never know. i think the key is letting the patient dr. what feels comfortable for them and never putting them in a position where they feel like they are forced to express something that they may not be ready to ever tell the world. and that's okay too. >> absolutely. dr elizabeth komen. thanks so much for that perspective thank you for having me we're also tracking breaking news out of washington, dc because they controversial gun accessory that was used in america's deadliest mass shooting now, legal once again today, the supreme court ruling that a government agency overstepped its bounds when it banned rapid-fire gun accessories 12 and bump stocks were used by a gunman who killed 60 people at a los vegas music concert back in 2017, he sprayed the crowd with more than than 1,000 bullets from a hotel room window. he killed 60 people and he heard hundreds more. >> we have cnn's paula reid joining us now on this polowat, can you tell us about this ruling because it's not just it's not about the second amendment, even though that's what people associate it with, we'll just a few moments said before joined you here on air, we got a statement from the atf, as you know? >> so to right. this case is really about whether they overstep their bounds and classified bump stocks as machine guns. >> and they wrote quote, as the 2017 massacre of nearly 60 people at a concert in las vegas made clear weapons equipped with bump stocks pose an unacceptable level of risk to public safety in light of today's decision, the president has called on congress to take action on bump stocks and the atf stands ready to work with congress to ensure that these devices no longer pose a threat to american law enforcement and the people they protect. >> now let's be real in an election year, it is highly unlikely that congress is going to legislate on something that's controversial as guns, lins is a first time we have heard them weigh in on this future decision. now here, the decision was 6-3 with the liberal justices dissenting and ian, his decision, justice thomas really focused on the mechanisms of bump stocks, right? because vom stocks are of course something that allow a shooter to convert a semi-automatic rifle into a weapon that can fire at a rate of hundreds rounds a minute. and justice thomas wrote, quote, fire and multiple shots using a semi-automatic rifle with a bump stock requires more than a single function of the trigger and he's very much focused on the mechanics of a gun in making this decision. this was a fiery dissent from the liberal justices, justice sotomayor, writing for her to colleagues, wrote a bump stock equipped semi-automatic rifle fires automatically more than one shot without manual reloading by a single function of the trigger because i like congress call that a machine gun. i respectfully dissent because that was a question before them. had they been improperly classified as machine guns? and she wrote that today's majority opinion we'll have deadly consequences paula, is that time of year where the supreme court is christmas? yes. yeah is issuing decisions at a rapid rate. >> others still a few cases out there, one of them looming over potentially presidential election. >> yeah, absolutely. there are 20 opinions outstanding. we have another big gun case. a question about if you have for example, are restraining order related to domestic violence, can you own a gun that's another big gun question i had in front of the supreme court. we also have the one you're referencing is of course this question about whether former president trump has immunity in the federal january 6 case. and some people even a little surprise that the supreme court took that up and oral argument, it's suggested that he might find that maybe he has some immunity and that would send that case back down, guarantee it won't go before november. so so another big outstanding abortion case that i repeatedly say the outcome of that case, a question about what do you do if you have restricted state laws related to abortion and they came come up against more expansive federal laws, right? they thought, oh, we'll toss it back down to the state this is now what you need to hash out, whatever they decide there, i would argue might even have a bigger decision odd impact on the election, then whatever they decide with trump in an unrelated january 6 case. such an important thing to remember, this court should make us all feel better. all of us about procrastinating say june with the supreme court paula reid. thank you so much. we appreciate it. and joining us now for more reaction to this supreme court ruling as senator martin heinrich, he's a democrat from new mexico, ascender or how are you reacting the ruling? >> i find this ruling to be incredibly offensive as as somebody whose own guns my entire life these things function as machine guns. >> and this ruling will undoubtedly cost innocent american lives. >> there's just no legitimate use for both sides i want explore that a little more because i think part of what you're pointing to is what justice clarence thomas said in his majority opinion, where he wrote a bump stock does not convert a semi-automatic rifle so a machine gun anymore than a shooter with a lightning fast trigger finger does. so i want to take a look at the difference between an automatic rifle with and without a bump stocks. so i'm going to play two quick videos here. this is zach nelson of the jerry rig, everything youtube channel. he is a self-described gun enthusiast who, you know, this is something he's done with his family for years. he's using an ar-15 that he says he purchased the day before this video was shot without a bump stock here it is. and, here is the part of the video where he is using the ar-15 with the bumps stock and for the first time that he's ever used it he was very surprised in the video by how many bullets he could shoot, how many rounds would go off there? it's an undeniable difference. i mean, what do you saved that sentence from justice thomas it's just not honest. >> like, i know these mechanisms i i've seen not just the videos, but i've used some of these weapons. he's not being an honest about what this does. and it is incredibly dangerous. there's no legitimate use for these who's going to use these bump stocks? it's going to be street gangs and cartels, and mass shooters. and innocent americans aren't going to die. because of this decision. >> i find it incredibly trough the supreme court is pointing to congress in this ruling to legislate here, you actually first introduced by partisan legislation to ban bump stocks in 2018. and this ban, which is president, former president trump's ban, he, his campaign now today signaling support for this move by the court saying that it should be respected. so i mean, what do you think of the chances for legislation like yours in the future if for instance, trump is elected, even if he isn't, and republicans in the house and the senate just want to follow his lead well, what i've found is that oftentimes things are impossible and congress until the moment that they're not. and unfortunately, oftentimes that moment is some incredible tragedy i was very involved in negotiating the bipartisan gun safety bill that we passed a couple of years ago. that was completely impossible until the issue i'm worried that it's going to take some some moment like las vegas where so many people were gunned down by those by those assault rifles with bump stocks attached to create some sobriety and congress and say that we have to do something about i think some folks might be surprised to learn that according to atf data, americans bought more than half 1 million bump stocks when they were legal in the course of just a little over ten years between 2008 and 2017 previously, legal right now, we have this decision. >> do you know how many of those people actually turned in or destroyed their bump stocks in 2019 when this now overturned rule officially went into effect. >> i don't think we have any good data on that and it would i would be concerned that many, many of these devices are still out there i'm also worried that the supreme court basically wrote a road map for how to get around gun law that we've all accepted for 100 years around machine guns or is the industry going to figure take this decision and figure out how to apply the same logic two block switches, which we're seeing more and more and street crimes now there's nothing good that comes out of this decision. >> and i just i don't understand when you weigh the equities, this is really troubling i mean, it sounds like you're saying because this is a ruling that is really about atf rulemaking authority. >> it sounds like you're saying that you do have a lot of worry. this is going to impact atf rules when it comes to other machine gun conversion devices and there are a lot exactly right. >> and, you know, i was talking to my attorney general the other day. he's saying he's seeing these devices used more and more often and street crimes and by gangs this is a huge problem and it's a criminal justice problem like we're going to see these devices used in ways that harm the public materially versus what the argument is. on the other side, it's really hard to manage senator martin heinrich. we appreciate your time this afternoon. thank you so much for being with us thanks for covering this still ahead. questionable. titanium on boeing and airbus planes. what we know about how the metal that about how the metal was used and if it's safe. and alex jones admits the end of infowars is likely a judge now approving liquidation of his personal assets and his media company could be next, what this means for the families of the victims of the sandy hook massacre? 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