As the president visits survivors of the attack, sources tell cnn the alleged gunman is on lockdown and in isolation. What are investigators learning about the murderous plot that led him to el paso . And fan the flames. Former Vice President joe biden aims a blistering attack at President Trump accusing him of aligning himself with the darkest forces in this nation. And fanning the flames of White Supremacy. Stand by for more on what biden and other 2020 democrats are saying about the president. Im wolf blitzer and youre in the situation room. Announcer this is cnn breaking news. Breaking news. President trump arriving in el paso just moments ago. Earlier he and the first lady stopped at a hospital in dayton, ohio, to thank First Responders and meet with some of the shooting victims and their fmilies. The president spent his flight between dayton and el paso tweeting attacks on the mayor of dayton and ohios democratic u. S. Senator Sherrod Brown even though when he left the white house this morning, the president told reporters he thinks his rhetoric brings people together. This hour ill speak with El Paso City Council member chris and raw hernandez and our analysts are standing by including cnn crews covering the president s trip to dayton and el paso and then back to the white house. Lets begin with our chief White House Correspondent jim acosta. President trump just arrived in el paso to meet with Law Enforcement and the victims from last weekends massacre. He is heading to the hospital in el paso right now as we speak. But the president just spent the last few hours blasting away at his critics on twitter including some on the ground in ohio while the president was flying on air force one. Even when the cities of el paso and dayton are grieving, the president is airing his grievances. Facing what is to be a critical moment in the administration, President Trump arrived in el paso, texas, to try to comfort another u. S. City traumatized by a mass shooting. Earlier in the day he spent times with Massacre Victims in dayton, high, where he was pressed to do something. He cant get anything done in the senate because Mitch Mcconnell and the president are involved in the gun lobby. He was treating about joe biden as he ripped into mr. Trump. How far from trump saying this is an invation to the shooter in el paso declaring, quote, this attack is a response to hispanic invasion of texas. How far apart are those comments . Reporter the president tweeted he was watching and said biden was so boring. The white house insisted the president would play the role of consolerinchief but President Trump sounded at times that he was consoling himself. So my critics are political people, trying to make points. Reporter dodging questioning about his rhetoric and that hes somehow unified the country. I think my rhetoric brings people together. Reporter mr. Trump was pressed on the el paso gunmans manifesto which appeared to be inspired in part by the president s use of the term invasion to describe migrants and he side stepped that one too. You and the shooter in el paso used the same language. Do you regret that . I think that illegal immigration youre talking about illegal immigration, right . I think illegal immigration is a terrible thing for this country. I think you have to come in legally. Reporter the president spread the blame around for the outbreak of violence under his watch. Ip dont like it. Any group of hate [ inaudible ]. White supremacy, whether it is any other kind of supremacy or ant it is antifa or any other reporter just like around charlottesville. You have bad people in that group but you also have some people that were very fine people, on both sides. Reporter despite striking a tone of unite in the week, he lashed out against beto orourke tweeting, beto, phony name to indicate hispanic heritage, orourke should respect the victims and Law Enforcement and be quiet. He fired back. 22 people in my home town are dead after terrorism inspired by your racism. El paso will not be quiet and neither will i. We will proudly stand together for one another and for this country and that is what im doing with my community right now. Reporter after some elected leaders in el paso urged the president to stay in the white house, the citys main newspaper published an open letter to mr. Trump that reads, mr. President the hatred of the El Paso Community didnt come from our city. They remember his visit to the city in february when he painted migrants as criminals. Murderers, killing, murders. [ crowd chanting ] build the wall. Reporter and we should point out right now the president is on the ground in el paso. He is visiting a hospital there in el paso to meet with some of the victims there after last weekends massacre. There is a Large Police Presence as you could see on the ground right now outside of the hospital. Trying to make sure everything stays safe in that area. We should point out white house officials earlier in the day lashed out at ohio senator Sherrod Brown and the mayor of dayton as the president did on stw twitter accusing them of disgusting behavior for not acknowledging the reception mr. Trump received at the hospital in dayton, ohio, but senator brown told reporters that the president was, quote, received well and did the right thing at the hospital. So it is not exactly clear what the white house what the president is talking about. As to whether the president will take action on gun violence, a source tells cnn mr. Trump is looking at some kind of executive order to tighten up the nations background check system. Wolf. Well see if that happens. Jim acosta, thank you very much. And also tonight, were learning more about what is happening to the el paso suspect who gave himself up after saturdays massacre. Lets go to cnns brian todd getting new information. What are you hearing, brian . Reporter wolf, we have new information from the investigation on how Police Tracked the shooters alleged manifesto and new details on his conditions inside of a local jail cell. Tonight Law Enforcement officials tell cnn suspected shooter 21yearold Patrick Crusius is being held on lockdown in isolation inside this Detention Center in downtown el paso. A Sheriffs Department official said hes being held in a single 7 by 11 foot cell away from other inmates. Law enforcement veterans tell us his possible inter action with other inmates is a major concern. It just moving him from his area to another area, just to make sure that hes not attacked, there is all sorts of things when you transfer, they have to ensure that that person makes it to trial. So as i understand, hes been held in an area where he will be safe from other inmates and safe from himself. Reporter but a Sheriffs Department official tells cnn the suspect is not on suicide watch. The El Paso Police lieutenant leading the team to track down what they believe is the shooters racist manifesto tell cnn affiliate woi, police have to sift through false information and panic to find that clue. We were able to uncover this manifesto relatively quickly. But we werent able to attribute it to the suspect until later. Reporter tonight investigators are piecing together information on the shooters alleged planning and including his 10 to 11 hour journey to el paso. Key questions theyre looking at . Did he talk to anybody. Did he indicate anything at all . Do you have tape on that . You never know who it is that is going to see the signs. And people who see the signs might assume, well, i dont know this person very well, someone else is going to report it. That is not a great idea. If there is a problem, anyone who sees it should get involved and report it. Reporter former El Paso Police chief carlos leon is confident this Resilient Community will recover but he said residents will have serious security concerns going forward. There will be a fear factor in all of us as we go to these larger stores, large events. Of course were going to be thinking in the back of our mind, hey, am i safe here . And you start looking around. Reporter and tonight walmart itself is having to address those security concerns. The retail chain under scrutiny for not having any security guards whatsoever here on saturday and for the policy of selling guns. Walmart officials telling cnn tonight they are reviewing their security protocol at all of the stores and taking a deliberate measure in reviewing policy on selling guns. To set the tone more of what is going on on the ground, as President Trump at this moment is at the University Medical center here in el paso, still a lot of raw emotions and frankly a lot of tension here on the ground. Behind me is this memorial where people have come to pay tribute to the victims but on occasion youve had spore attic protests and protests at a nearby park here in el paso where people are being very, very passionate about just what is going on here and about President Trumps visit. So as the president visits that medic Medical Center, just a lot of raw emotion. Lets go to dayton where the president met with victims and their families and local officials. Weve spoken with the mayor. What did she tell you about the meeting with the President Trump . Reporter a couple of things. She was honest about the meeting, wolf. She said the meeting initially went well in terms of how trump had responded to some of the victims at the hospital from this terrible shooting. But she also did not hold back her impressions of how she feels as though the president handles the issue of gun control. She said, quote, she does not believe the president is capable of having a real conversation about gun safety. There to comfort the those injured and those victims and he and the first lady did a nice job of that. I would say no, there was nothing concrete that we got out of it but we got to speak our mind about this issue which i think is so important to daytonans and it is disappointing when your community has gone through this much and there is no discussion about what needs to change, what policy matters need to change. It is disappointing. He just uses words that dont really mean anything. So were going to do something. Because i was really like, mr. President , we need to see action. We need to see something done on gun control specifically on gun control. Were going to do something. Reporter so what youre hearing is the mayor very frustrated and disappointed overall about that meeting with the president. She really feels as though was hoping the president would at least commit to something when it comes to gun safety. She said she came out of that meeting with nothing. Jason in dayton for us. Thank you very much. Joining us now, the El Paso City Council member cassandra hernandez. Thank you so much for joining us. And i know these are difficult days for you, for everyone in el paso, with so many people around the country. You joined a protest today against President Trump. Hes in your city right now. What is your message to the president . My message to the president is that he is not welcome. For many reasons. Because he has dehumanized immigrants and mexicans, people of my community. He has taken no action on gun reform and diverted that blame. And worst, he has awakened a hate deep within White Supremacists that has caused shootings like we have seen tis weekend. On his way to your city, el paso, the president criticized the mayor of dayton who had just hosted him in the aftermath of her citys mass shooting and last night the president tweeted that your former congressman from el paso, beto orourke, should be, quote, quiet. Are you concerned about what he might say about el paso following his visit there . No. Im not concerned. But i have some advice for him. How about he instead celebrates american el paso heroes that we see here in el paso. Like two africanamericans, christopher grant who was throwing bottles at the shooter to distract him from shooting a newborn baby, like Army Serviceman glendan oakland who had carried children to keep them from being shot by the shooter. And like u. S. Cbp agent for helping bring aid to chris brant and like our First Responders and thanking the people who supported this tragedy and the hospital staff and so many more. So i would like to see the president honor our heroes before criticizing our leaders in el paso. Some el paso residents actually put out signs for President Trump. I want to read one of them. This is translated from spanish. It says, mr. Trump, no mar acts of racism, acts of hate, acts of terrorism, we are a hispanic country and the hate towards mexicans is not fair. We are three girls, american citizens, our parents are mexican, and we are afraid to go outside, end quote. Does that line up, cassandra, from what youre hearing from your constituents . I hear a variety of things. But i think what is saddening me the most, wolf, is how parents are trying to talk about this to their children. Are they next to be shot for being hispanic or migrants . And that is very unfortunate that this is the america that we have created and trump has had no has not brought us the words to comfort us, has contributed to the problem. He is part of the problem. He needs to take back his evil words about migrants, about asylumseekers, about refugees and mexicans and hispanics and people who look like me. And im so im so sorry to the people who are living in fear. But this evil act will not define us. We are more united than ive ever seen before. Were el paso strong. And that is the message that we are sharing with everybody, those who are fearing to live in their own skin. President trump said hes looking at background check legislation. But cnn has already learned that Top White House officials held conversations with the National Rifle association, the nra, since the shooting in el paso. What is your reaction to that . I think it is a good first step. Im not im not confident but i will be optimistic that something comes from that. Until we ban assault rifles weapons of war, highcapacity magazines, universal background checks, were not going to see the end of the mass shooting. This is been normalized and commonplace in our nation and he needs to do more than just meeting with nra members who give money and lobby and give millions of dollars to congressman and to senators. We need more than just talk. We need action. We need policy today. What is your community right now need most to begin healing . I think we need to hear President Trump apologize to hispanics who look like me, to the immigrants, i think what we need is for President Trump to denounce some of the executive orders and the practices of the Border Patrol and homeland security, leaving migrants in mexico so they cant seek asylum here. We need to see him reverse actions and to apologize to the hispanic and latino communities and to the immigrants of the United States. Cassandra hernandez, thank up very much. Well stay in very close touch with you. 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