officially kicks off in north carolina. president trump is expected to head to charlotte in minutes for today's roll call vote. we are also following breaking news regarding covid, a race for a vaccine as well as coronavirus treatments, plus accusations the white house is playing politics. president trump announcing the fda is giving emergency authorization for the use of convalescent plasma to treat coronavirus, that is plasma from patients who survive the infection, but many health experts claim there is not yet enough data to support the use of the treatment. the "new york times" is also reporting that the white house is looking to give approval for a vaccine before the end of crucial phase three clinical trials, those that include thousands of people to make sure the vaccine is safe, raising alarms this could be happening too fast and notably of course right before the election. president said he wants a vaccine before the election. elizabeth cohen joins me now. so first let's talk about the emergency use of so-called convalescent plasma, plasma from people who have gotten through this. what do the studies show at this point, and based on normal medical practice, is there enough data to support the emergency authorization? >> jim, what the studies show is that, while this might work, we don't know if it works, and what the studies really show is that the trump administration is cherry-picking data to make this treatment look better than it might actually be. i'm going to get nerdy, i think you can take, but here it is. c they chose a death rate what happens seven days out. that's okay but why not look 30 days out? the seven-day death rate is a better number so they chose that one, when they should have chosen the 30-day one so let's take a look at what the actual numbers show. the trump administration says 35% decreased death rate when you treat people with convalescent plasma earlier in the hospitalization versus later on, when you look at the is en-day death rate. you look at the 30-day death rate it's only 23.6% lower, so that was a difference not ppointeded out by the trump administration. they chose a number that is less reliable and this part is more important. this death rate can be explained, this lower death rate can be explained by other factors. you don't need to be a medical genius to know that earlier treatment is always better. if these patients were getting plasma earlier, what else were they getting earlier? they were in the hospital earlier, so they were getting remdesivir steroids, other things earlier, that could explain why they had better survival, not necessarily the plasma. jim? >> it's why you do the science over time, right? it's why this is part of the process. elizabeth cohen, thanks very much. joining me to discuss this and a whole host of other issues dr. richard besser, former acting director of the cdc. thank you for helping us cut through the politics as it mixes with the science. let's start from a public health perspective. is there enough data to support today the use of convalescent plasma? >> jim, what really concerns me, last week this question was raised, and some of our smartest minds, frances collins, tony fauci said there wasn't enough data to move forward with this emergency use authorization, and a big concern is that with the emergency use authorization in place, it will be harder to do the clinical trials. there will be less plasma available, fewer patients available to do these studies. as elizabeth was saying, the studies so far haven't compared people who got this product to people who didn't. it compared people who got it early to people who got it lae.. overall, does this product improve survival or any other outcome? the big concern for me as a pediatrician, as a scientist is the influence of politics on the approval process at fda. we want more drugs to come forward. we want vaccines to come forward but if we don't trust the process that they're truly going through all of the steps that are required to make sure that products are safe and effective, who is going to want to use a vaccine when and if it's available? >> there you go. so you bring up the vaccine here, because you've had the president pushing for something, anything before the november election, and now there's talk according to the "new york times" of fast-tracking the vaccine before the end of phase three clinical trials. are you concerned that politics are disrupting the process there for the vaccine? >> well, as a pediatrician, i know that there's nothing that i do for my patients that has more impact on their health in a positive way than vaccinating them fully and on time, and the reason i have that confidence is that each of those vaccines has gone through thorough safety and effectiveness training so i can say exactly what the benefit of that vaccine is going to be in the community. if this vaccine comes forward without all of that work, i'm not going to have the confidence to tell my patients they should get this and we already know from survey data that people are skeptical. they're concerned that corners are being cut and that products are going to come to them that haven't had that thorough testing that we need to be comfortable. >> the cnn poll just last week showed only 56% of americans willing to take a vaccine, if it existed, if it were to exist today. so what does that mean? i wonder, is it possible that the president is undercutting his own desire to have a broadly available vaccine by it seems putting his thumb on the scale here on the medicine behind it? >> well, if we want a vaccine to really turn things around for this pandemic, a couple things have to be in place. one is you want it to be a very effective vaccine. the measles vaccine is about 95% effective. flu vaccine is much lower than that, in some populations, it's less than 50% effective. so you want to have a covid vaccine that's highly effective but you can have a vaccine that's 100%, but people aren't going to take it and feel comfortable with t you're not going to see the reduction in disease transmission. you need both. if there's a thought that politics is driving any of these decisions, you're not going to see people stepping up to get this vaccine and not going to see doctors and public health professional s recommending the do so. >> it's why we have rules and processes for doing this kind of stuff. you wrote a recent op-ed for cnn, you talk about the effects of access to health care on this pandemic, quoting you here, the cdc an agency i called home for 13 years uniquely equipped to provide sound, science-based guidance for our nation during this public health agency but if millions can't follow the advice or have their basic medical needs met we'll all continue to pay the price for this pandemic and for however longer we tolerate this broken and unjess system. tell us how we're seeing the holes in the u.s. health care system exposed in the midst of this pandemic. >> covid makes it clear. i saw it clearly before this, because i work as a pediatrician in a community clinic, and i know that patients without insurance don't get the same care, the same quality of care or the timeliness of care, so here in covid, at the start of this, there were 28 million people in america without health insurance, and the recommendation from cdc were if you think you had covid symptoms to call your doctor, don't go to the er, where you could pick up covid. if you didn't have health insurance, who are you going to call? what were you going to do? you were going to show up, show up late and likely going to show up in communities where the quality of health care wasn't as good. we need our politicians to come up with a system, and there are different approaches to this, so that everyone in this country has access to high quality, comprehensive affordable health care, not just for physical health but mental health. the mental health impacts of covid are profound, from isolation, from anxiety, and there are tens of millions of people who don't have access to the mental health services that they need. we have to solve this as a nation, and covid is making it clear where there's such urgency around this. >> yes. dr. richard besser, thanks so much for coming on, as always. >> thanks, jim. we are just moments away from the official start of the republican national convention, roll call will begin shortly in charlotte, north carolina, that's where we find cnn's robert ryan nobles. ryan, the president expected to make an appearance for the roll call but no party platform this year, just a proclamation, we'll do what the president wants for the next four years. >> reporter: yes, jim. another odd development in what's definitely been an odd year in terms of this 2020 campaign, and this is a much scaled down version of the republican national convention that we're seeing here in charlotte today. there's about 300 delegates that started to make their way into the convention hall behind me. at some point during the morning, they will begin the roll call vote, where the states will cast their ballots in favor of president trump and vice president mike pence, serving as the party's nominees for the fall election, but you're right. a lot of that business of the convention that normally takes place during this time of the year where they haggle over the specific policies of the party, all of that was shelved. the rnc producing a resolution unanimously agreed to, because of coronavirus and because everybody just kind of agrees donald trump is their standard bearer, they'd not adopt a platform but show full support for president trump's second term agenda. peculiar for sure, but not uncommon, given all the different changes that have come up because of the coronavirus pandemic. later tonight, donald trump, jr., is the headline speaker for the republican convention, much of the activity will shift here from charlotte to washington, d.c., where we'll see a lot of these speeches take place, but jim, you're right. we are expecting the president and the vice president to arrive here in charlotte later this afternoon, perhaps to deliver short remarks thanking the delegates for nominating them again for the 2020 election in what can only be described as somewhat of an odd year to say the very least. jim? >> no question, ryan nobles, good to have you there. 2020 republican national convention, kicks off tonight with a line-up as we mentioned includes former u.n. ambassador nikki haley, senator tim scott, the president's son, donald trump, jr., and others. we'll bring you special live coverage all week long, starting tonight 7:00 eastern time here on cnn. other news, white house counselor and fierce defender of the president, kellyanne conway announced she is leaving the white house at the end of this month, just before an election, and her husband, george conway, one of the president's most vocal critics notably says that he as well is with drawing from the lincoln project, a group of anti-trump republicans, they both say they need to focus on their family. cnn's john harwood joins us now more on the surprise joint announcements. john, what do we know? >> reporter: well, what we know is that after an extended period of time, when george conway was fiercely, has been fiercely going after president trump, his mental fitness, his capacity to serve as president, obviously kellyanne conway has been just as fierce on the inside, you had their children drawn into this as well, teenaged daughter who was been posting on tiktok her opposition to president trump, and evidently from the statement of kellyanne conway and george conway, it became an untenable situation within the family and understandably they have made a decision to, as we get near the end of the campaign, and if the polls are right, it's likely to be the end of the trump presidency, unless something dramatic changes, they've made a decision to try to focus on their family, and i think everyone can understand that and wish them well. >> john harwood, we know you'll follow it. thanks so much. still to come this hour, we are closing in on election day. the president stoking fears about mail-in voting, something that he himself takes advantage of. postmaster general louis dejoy is set to face lawmakers' questions in less than an hour. i'll speak with one of the republican congressmen who will be at that hearing asking questions. two dangerous back-to-back storms are threatening the gulf coast. experts say this has not happened in decades. and protests in wisconsin overnight, after a black man was shot by police multiple times in the back, as the video shows, that man is now fighting for his life. we'll bring you the latest. stay with us. ou pop the hood for us? there she is. -turbocharged, right? yes it is. jim, could you uh kick the tires? oh yes. can you change the color inside the car? oh sure. how about blue? that's more cyan but. jump in the back seat, jim. act like my kids. how much longer? -exactly how they sound. it's got massaging seats too, right? oh yeahhhhh. -oh yeahhhhh. visit the mercedes-benz summer event or shop online at participating dealers. get 0% apr financing up to 36 months on select new and certified pre-owned models. welcome back. twitter has flagged a tweet from president trump over the weekend about mail-in voting saying that that tweet was misleading claims that could discourage people from voting in november. that tweet pushed a number of statements without backing including the claim that mail drop boxes are a voter security disaster that make it possible for a person to vote multiple times. just not the facts to back that up. the tweets also casting doubt on who controls those ballot drop boxes, going so far as to say the boxes are not covid sanitized. what are the facts? of course the president claimed many times otherwise but voting by mail rarely results in fraud, according to the vote at home institute, more than 250 million, you heard that right, million votes have been cast via mailed out ballots since 2000, just to put that in perspective the national vote at home coalition reports oregon sent out more than 100 million mail-in ballots. of those 100 million plus, the state documented about a dozen cases of proven fraud, that is do the math here, one of every 8.3 million ballots cast. the president submitted his own absentee ballot in florida. while the president tries to create a distinction between absentee and mail-in voting they are based on process and security essentially the same subject, in fact, in states across the country to several degrees of verification. we should note 43 states run by republicans and democrats allow vote by mail or allow requests for such ballots. the president also suggests ballot drop boxes make it possible to vote multiple times and asserts that somehow matters if the boxes are in republican or democratic areas. again, the facts, the boxes are specifically set up and designed to securely receive ballots. experts say only election administrators handle and process ballots once they are submitted under federal law. anyone who commits voter fraud could be fined up to $10,000 and spend up to five years in prison for each act of fraud. we should be clear that when the ballots are dropped there, they're subject to those same identification verification signatures, et cetera. the president claims without evidence that mail drop boxes would not be covid sanitized. so as president trump tries to tell you that mail-in vote something not safe, that it isn't secure, remember that if you do it right, you follow the guidelines, it will be and if you need to cast a mail-in ballot to protect you and your family during this pandemic, if you can, those are the facts and it's allowed by the law in states across the country. just over half an hour, postmaster general louis dejoy will be back in front of congress, this time testifying in front of the house oversight committee about recent changes to the u.s. postal service. i'm joined by someone who will take part in today's hearing, a republican congressman from georgia as well as a member of the house committee, jody heiss. >> glad to be with you, thank you. >> you have called concerns about the post office's ability and resources to handle a surge in mail-in ballots in november. i want to quote the president "they the post office need that money in order to make the post office work so it can take all of these millions and millions of ballots, but if they don't get the two items" meaning the funding debated now, "that means you can't have universal mail-in voting because they're not equipped to have it." you say it's a conspiracy theory. the president says without the funds the post office can't handle the surge. are you saying you disagree with the president? >> no, the issue here is the accusation that the president is somehow trying to suppress the votes. that's simply not the case. that in itself is a conspiracy created by the democrats and we'll see more of that in the drama to take place in the hearing today. >> i'm talking specifically about the post office. the democrats are claiming that the changes by the post master general have reduced the ability to handle an expected surge during a pandemic. the president has said in so many words there that without the funding being debated, the post office won't have the resources to handle the surge. i'm asking it simply, does the post office need those funds to handle the surge or not? >> the post office right now has over $14 billion cash on hand. they have another $10 billion that the treasury has set aside for a lone in case the funds are needed. they do not have access to that $10 billion because they have too much money on hand. >> so the president is wrong? the president is wrong when he says they need extra funding? >> there's two different things here. the post office for decades has been losing money, we know that. right now they have cash on hand because the pandemic has caused people to purchase through amazon and different places, so there's more packaging being delivered than ever before. so right now the post office has cash on hand. their overall business model is unsustainable. that is the issue where they're going to need cash, but they don't just simply need cash. they need reform, what the democrats are refusing to take place at this point to reform issues creating the problems. >> does the post office need additional resources as the president says -- >> not right now. >> you don't think -- >> not right now they don't. right now they have $14 billion. as soon as this pandemic is over, they're going to need some more cash as they have an unsustainable business model which in itself needs drastic reform which the democrats are refusing to have. >> so we'll say the president is wrong on that. i want to ask you about mail-in voting because as you know the president claimed with an increase in mail-in voting, this will be the most rigged election in history. georgia great state of georgia where you're from is one of 34 states that offers mail-in voting without an excuse. it's done so since 2005. do you believe that policy needs to be reversed in georgia? >> two different things, you have absentee voting been here for a long time. no one that i know of is opposed to absentee ballots. >> what is the difference? they vote through verified by signature, et cetera. >> no, no, there is an enormous difference. absentee ballots are for an individual, we know who the individual is, they make a ask for the ballot, the ballot is sent to that individual. universal mail-in balance the los are opposite and this is what the democrats are pushing for, where ballots are sent to tens and tens and tens of millions of people -- >> in what circumstances do you know it's an application, not an actual ballot, you apply for it and go through the same security as mail-in voting. >> go back to the heroes act of 100 days ago and see the democrats had in that act three specific issues, number one, universal mail ballots sent out across the country to everyone. number two, banning states from being able to have voter i.d. with where those ballots are going. >> let's set aside voter i.d. for a moment. >> that is a disaster and ingredient for fraud. >> i could go through the actual definition what have balance lat harvesting is. let's set that aside. >> we can't set aside those. >> i have to deal with them one by one, each has a different issue. let's start with the issue of security of mail-in voting. people in georgia can vote in by mail without an excuse and you were elected in elections that had this rule in place, what do you say to people who are concerned about say they have a preexisting condition, older, concerned about going in through a voting polling station during this election, afraid they might catch the virus what, do you say to them? >> absolutely. use the absentee ballots. that's what they're there for, for individuals who in this case are afraid to go to the polls or whatever reason unable to, that's why we have absentee ballots. they can request the ballots in georgia and they'll be mailed to them. that's no problem. >> why does the president say mail-in ballots are okay in florida and arizona, run by republicans not elsewhere? >> no, no. absentee ballots are given in any state. when a person requests a ballot because they can't go to the polls and the ballot is mailed to that individual, we know who that individual is fine. it's an different issue from universal mail-in ballots which is an ingredient for fraud and fraud will take place. >> i'm asking you, because voters, voters they just want to know what the facts are and voters have reasonable questions when the president says all mail-in voting is fraudulent, it's going to create the most fraudulent election but it's okay -- >> all universal mail-in voting has that potential. and there's a difference. please make the distinction between universal mail-in ballots and absentee voting. >> i do know the difference. >> you can not lump them together. >> the truth is they have many of the same security procedures. let me just ask you this, then. what evidence do you have and when we cited for instance a state of oregon that has done about 100 million ballots like this, and one in 8.3 million balance the los had evidence of fraud, about a dozen over the course of 100 million balanlots. what evidence do you have there is an issue with mail-in voting when it's spread out over a larger part of the population? can you cite some data that says that's fraud that that has a greater incidence of fraud? >> it's a legitimate question and again two different issues we're talking about. mail-in ballots versus absentee voting. >> where is the evidence? you're making a distinction there but what is the evidence there's fraud? can you scite any study? >> the democrats are doing something we've never had before. look at what happened in new york for example. >> you can't give me an evidence of fraud. >> chairwoman maloney, listen to me, just had six weeks, six weeks waiting to get results from her election because of the mail-in ballots that took place. >> they were taking the time to verify the lots. >> they were thousands thrown out and this is just laying the groundwork for lawsuits. this is what the democrats want, they want national confusion in the upcoming election. there will be absolute fraud. there will be lawsuits from this. >> you're saying there will be absolute fraud and not giving -- >> this is what they're pushing. >> not quoting a single statistic to back that claim. >> because it hasn't happened yet. how can you have a claim for that which has not yet happened? we are going to have a new pathway -- >> we've gone down this path for years. >> we have not had universal mail-in ballots. they've had absentee ballots. >> many states do it by the tens of millions. >> when we have universal mail-in ballots, we will have fraud. >> based on what? how do you know that? >> based on -- look -- >> they go by the same security procedures as absentee ballots do. you have to verify signature and i.d. >> here's how i know we will have fraud. you asked me a question, i would appreciate the opportunity to answer. >> absolutely. how do you know? >> because of what the democrats want, what they want, universal ballots without any voter i.d. we're going to have ballots mailed out to people who are deceased, people who have moved. there will be no validation as to where the ballots are sent. these ballots are going to go out to deceased, to people who have moved, to people where there is no indication who they are. go back and read the heroes act. >> i read the heroes act. but also looked at the data and there is no data to support the claim. >> because it has not yet happened. we have not had yet the heroes act take place. >> we've had hundreds of millions of votes cast that way. >> by absentee ballot. >> i'll welcome you back to the broadcast and please bring some data to support the claim that a vote that's going to happen in two months is going to be rife with fraud -- >> this election will be -- because it hasn't happened. quit distorting the issue. you can't have evidence for that which has not yet happened. if democrats have their way this will be an election filled with fraud. >> this election has not happened, but voting by this method has happened by the tens of millions of votes. >> voting with absent wree balance lots has. >> when you can back with up with data you're welcome on this broadcast. >> we'll be absolutely ready to do so. >> next time, please do. thanks very much. preps are under way in louisiana as not one but two tropical storms threaten the gulf coast. we'll be live from new orleans, next. kraft. for the win win. alit's just more information; have a dexcom because why wouldn't you want that? 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>> goodness, watching what's happening out there is heartbreaking. martin, chad, thanks so both of you. let's talk about the fires now in california. devastating, just devastating there. our dan simon is in sonoma county. big issue here, right, they don't have enough firefighters to control, there's a fraction of what they had in the past. tell us how it's going now and what they're doing about it. >> reporter: hi, jim. first of all, we've gotten a pleasant surprise in the last few minutes in the form of rain, but if that rain is accompanied by lightning, you could have more fires, the area is also under a red flag warning until early this evening, so you could have some strong winds, but the numbers are just staggering. first of all, let me explain where i am, healdsburg. this burned out house behind me, the chimney, looks like somebody tried to save it with this garden hose. talking about 11,000 lightning strikes within the past week and that's created some 600 or so fires, about two dozen of them considered to be major. i want to you listen to one firefighter who explained what the conditions are like. >> being out on the line, it's some of the most extreme fire behavior i've seen in my 25-plus years of doing this. the terrain being so steep and just overall how dry it is, and you know, we're seeing fire that we cold trailed and been good and turn around five, ten minutes later it flared up across the line somewhere. you never know where it's going to pop up. it's extremely sporadic this year. >> reporter: these three dozen fires have been distilled down to about three complexes. two of them are already the second and third largest fires in state history. crews made progress over the weekend getting to 20% containment. will firefighters be able to build on that progress or could things go in the wrong direction? jim? >> every season they get hit so hard. dan simon, thanks very much. new fears that slashed public transportation budgets due to the pandemic could be permanent. what this means for essential workers who depend on public buses and subways, coming up. hi, i'm pat and i'm 75 years old. we live in the mountains so i like to walk. i'm really busy in my life; i'm always doing something. i'm not a person that's going to sit too long. in the morning, i wake up and the first thing i do is go to my art studio. a couple came up and handed me a brochure on prevagen. i've been taking prevagen for about four years. i feel a little bit brighter and my mind just feels sharper. i would recommend it to anyone. it absolutely works. prevagen. healthier brain. better life. listerine® cleans virtually 100%. helping to prevent gum disease and bad breath. never settle for 25%. always go for 100. bring out the bold™ i'm a talking dog. the other issue. oh...i'm scratching like crazy. you've got some allergic itch with skin inflammation. apoquel can work on that itch in as little as 4 hours, whether it's a new or chronic problem. and apoquel's treated over 8 million dogs. nice. and...the talking dog thing? is it bothering you? no...itching like a dog is bothering me. until dogs can speak for themselves, you have to. when allergic itch is a problem, ask for apoquel. apoquel is for the control of itch associated with allergic dermatitis and the control of atopic dermatitis in dogs. do not use apoquel in dogs less than 12 months old or those with serious infections. apoquel may increase the chance of developing serious infections and may cause existing parasitic skin infestations or pre-existing cancers to worsen. do not use in breeding, pregnant, or lactating dogs. most common side effects are vomiting and diarrhea. feeling better? i'm speechless. thanks for the apoquel. aw...that's what friends are for. ask your veterinarian for apoquel next to you, apoquel is a dog's best friend. welcome back. the pandemic has devastated public transit in the u.s., forcing cities to slash budgets as more people work from home or simply avoid public buses and trains because of fears of the coronavirus. but what about essential workers who depend on it? they don't have another option. what happens when bus and train services are cut? cnn's pete muntean has more. >> reporter: devin mccall takes the d.c. metro five days a week to his job at a suburban hospital, still working but fears public transit will not be for much longer. >> i won't be able to go to work, and i need to go to work. >> reporter: public transit systems nationwide say they are struggling in the pandemic. congress kept systems running for essential workers, 25 billion federal simulus dollars. >> they are dwindling down quickly. >> reporter: metro general manager paul wedefeld said it is short more than 80% of its normal riders, empty trains mean burning $2 million in cash each day. wedefeld says congress must step up once more. >> the other alternative we have is to cut. we have to cut service. we have to do furloughs, have to do layoffs, all of the nasty things no one wants to deal with. >> reporter: new york system will detail how deep cuts to be. >> we are at a moment where every dollar counts. >> reporter: mta will face a fiscal tsunami without $4 billion just to get it through this year alone. public transit advocates say service slashed by the pandemic could be permanent, making returning to normal even tougher. >> congress needs to get its act together. >> reporter: senate democrat chris van hollen of maryland wants $3.2 billion for mass transit. he says time is running out. transit advocates estimate almost 3 million essential workers take public transit, and two-thirds are people of color. >> there is no doubt that if you pull the plug on transit systems or allow them to wither away that you're jeopardizing entire communities but you will have a disproportionately harmful impact on communities of color. >> reporter: the impact could be even bigger on smaller cities. in flagstaff, arizona, many city bus riders are what's called transit-dependent, those without cars, to get to work or school. heather domelin says her system needs $7 million more or it could cut services to neighborhoods that need it most. >> we feel hopeful there will be a way we find more funding so our community doesn't face service cuts. >> reporter: the cuts could have a disproportionate impact here in the d.c. area, especially on people of color. they make up 82% of the region's bus riders. jim? >> some folks don't have a choice. that's the only way in to work. pete muntean, thanks for following it. protesters hit the streets in wisconsin, after a black man repeatedly shot in the back by police. all of this reportedly happening in front of his three children. we're going to bring you what you know. deck, crying for help. while you do nothing, it's inviting those geese over for target practice. today, let's stain. cause if you stain your deck today, they can't stain your deck tomorrow. behr. exclusively at the home depot. looking to repair dry, damaged hair without weighing it down? try pantene daily moisture renewal conditioner. instead of just coating hair with heavy moisturizers, pantene's smart conditioner formula micro-targets damage where you need it most, to repair and hydrate without weighing hair down. plus, the color-safe formula is free from parabens and helps prevent frizz. to help renew dry, damaged hair, try pantene daily moisture renewal conditioner. brand power. helping you buy better. thewith type 1 diabetes,osed you should have a dexcom. knowing where your numbers are going before they get there-- it's a superpower. i've had other systems and i'm on because it's the best. and, because it works. it's easy to wear. it's easy to put on. you can see it right on your i can't imagine anything simpler. no fingersticks. i can't say that enough. i think that's an incredible advancemen this is the cgm technology you've been waiting for. man multiple times in the back, this while his children were nearby. according to the man's attorney, that man is fighting for his life. the officers involved have been placed on administrative leave and we're learning this morning that attorney general bill barr will brief the white house on the shooting today. cnn's paolo sandoval has been covering the story and is live in kenosha, wisconsin. the what do we know this morning? >> reporter: jim, i have to tell you that knowing that this man actually survived the shooting and is hospitalized according to the latest update from police, knowing that doesn't make it any easier to watch this video, deeply disturbing but does offer a glimpse into the actual shooting incident. we'll play a portion of it in a moment. it was yesterday afternoon here in kenosha, wisconsin when police say officers were dispatched to a home to reports of a domestic disturbance. we don't know exactly who called police or what the nature of that disturbance was, but in the video you're about to see you will see a man that's been identified by the governor as jacob blake in this interaction with police that ends with those shots fired. again, the video is very disturbing. guns drawn, two kenosha police officers followed jacob blake to the side of an suv when he opened the door and almost immediately the shots are fired. [ gunfire ] >> reporter: at least seven shots were heard and police say blake was immediately treated for several gunshots. all of that is certainly going to be part of the evidence. >> paolo, we lost paolo sandoval there. again, the video from that shooting just horrible to see. paolo is going to stay on the ground. we'll bring you news as the investigation continues. in just minutes now, the postmaster general, he'll be back on the hot seat on capitol hill to answer questions about changes to the postal service as the election approaches. expected increased demand for mail-in voting. we'll bring you all the latest and we'll bring that to you live. stay with cnn. experience the ultimate sports hub. where you can find games, news and highlights. all in one place, right on your tv. the xfinity sports zone. use your voice to search every stat and score. follow the teams you love. and, even get notifications with breaking news alerts and more. with the xfinity sports zone everybody wins. now that's simple, easy, awesome. say xfinity sports zone into your voice remote today. very good munchd morning to you. i'm jim sciutto. we're following breaking news this morning. any moment now the postmaster general louis dejoy will testify on capitol hill on his changes to the pass of, changes that critics say have hindered the usps ahead of a november election, one in which a big surge in mail-in voting is expect. we're going to take you live to that hearing at the moment it begins, just moments from now. and the republican national convention in north carolina just officially called to order. president trump is now on his way to charlotte for today's roll call vote, and on the eve of the rnc, the white house has announced the fda is giving emergency authorization for the use of what's known as convalescent plasma to treat coronavirus, plasma from people who have survived the infection but health experts are worried about moving too fast. the "new york times" also reporting the white house is looking to give an approval for a vaccine before the end of crucial phase three clinical trials raising concerns that politics once

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