Why did you cancel the hearing . Theres no nothing has been cancelled. Controversy around the House Intelligence Committee reaches a fevered pitch. It is very obvious the white house wanted this meeting cancelled. If they hadnt cancelled it, she would have testified today. We have no problem with her testifying. Plain and simple. The report in the Washington Post is 100 false. That coming from sean spicers mouth just a few moments ago. Thats coming from sean spicers mouth. The opposite is probably happening. Its really spinning fast. Oh, my gosh, its right in front of me. Tornados, powerful wind and hail hitting parts of texas, arkansas and louisiana. Along this line, that is going to be another headline maker, unfortunately. Brexit finally begins. Britain begins its official exit from the European Union. This is an historic moment from which there can be no turning back. Hillary clinton, speaking to businesswomen in San Francisco. There is no place id rather be than here with you, other than the white house. Weve got a massive cleanup. A plane bursts into flames when it veered off the runway during a landing in peru. All that check out this bad boy. Ive got knows for you. When this guy wants to play through, you let him play through. The pullup jumper, three seconds left. It goes in and they win the game and all that matters. If the president puts russian salad dressing on his salad tonight, somehow thats a russian connection. The white house suggests it was all benign and routine but thats not the same as putting russian salad dressing on your salad here at the white house. On cbs this morning. The 17th most popular salad dressing in america. 17th. So if he was using it, yes, that would be suspicious. Wait a second. The president put russian dressing on his salad tonight . Trump ate a salad . This mornings eye opener is presented by toyota. Lets go places. Welcome to cbs this morning. A cbs news poll out this morning finds Many Americans disagree with the president when he says the trump russia story is a hoax. 59 say it is very likely or somewhat likely that Trump Associates had Improper Communications with russias government. 40 of people in our poll approve of preside trumps Job Performance and that is nearly unchanged from last month. Now, the white house denies trying to block former acting attorney general sally yates from testifying to congress about russia. The president fired yates in january after she told Justice Department lawyers not to defend the first version of his refugee and travel ban. Jeff is on capitol hill with the new controversy over sally yates. Jeff, good morning. Reporter good morning. The house intelligence investigation has officially stalled, bogged down by finger pointing and accusations. The latest flash point is the testimony of sally yates, who was the official who informed the white house that former National Security advisor Michael Flynns misled the Vice President about his contacts with the Russian Ambassador. The white house did not respond and took no action that prevented miss yates from testifying. Reporter an exasperated sean spicer dismissed accusations that the white house sought to delay sally yates from testifying. We encouraged them to go ahead. But to suggest in any way, shape or form that we stood in the way of that is 100 false. Reporter cbs news has obtained this letter from the trump Justice Department to the attorney representing yates. It warns that there is a limit to what she could reveal in her testimony and that she needs to consult with the white house. On the same day she received this letter, the chairman of the House Intelligence Committee, congressman devin nunes, cancelled yates scheduled testimony. It gets stranger and stranger and, frankly, more bizarre every day. Reporter since nunes announced late last week that he had been shown intercepted communications involving members of the trump Transition Team, the House Intelligence Committee investigation into russian meddling into the election has been in disarray. A lot of politics get heated but im not going to involve myself. Reporter on tuesday nunes was facing more questions about whether he was working with the white house to delay his committees investigation while also dismissing calls for him to step aside. Are you going to stay as chairman and run this investigation . Why would i not . This is what coverup behavior looks like. Reporter Democrat Eric swalwell who sits on the Intelligence Committee says nunes actions leave doubts about whether he can lead the investigation. Right now the American People wanting transparency. What they are getting are more and more smoke bombs. Reporter the house Committee Investigation has held just one hearing on russia. No others are currently scheduled. As far as the senate Intelligence Committee, it is expected to hold its first hearing tomorrow, a press conference later on today. Jeff, thanks. Adam schiff is the ranking democrat on the House Intelligence Committee. He is urging chairman devin nunes to reschedule the open hearing with former acting attorney general sally yates. Congressman schiff joins us from washington. Good morning, charlie. Do you have any evidence that the white house urged and took part in denying the opportunity for sally yates to testify . I dont have any particular evidence. The timing certainly raises a lot of questions and the fact that the hearing was cancelled abruptly and without an explanation, you know, causes a lot to ask whats going on here . Why arent we Going Forward with this hearing . I have to think that the hearing that we had on monday of last week in which the fbi director acknowledged for the first time that the Trump Campaign associates were under investigation for possible coordination with russia and the fact that the director has rebutted the white house claims about illegal wiretapping by barack obama had something to do with the cancellation of the second open hearing. I think the white house probably felt that didnt go well for them, but its otherwise hard to explain why the sudden cancellation of the hearing. I think it probably had a lot to do with sally yates. Do you believe that the white house is cooperating with the chairman and, therefore, robbing this committee of credibility . Well, you know, i think there is a close relationship that the chairman has to the white house. He was an important member of the Transition Team and i think hes maintained that relationship with the white house. And that has caused a lot of questions to be raised about whether he can fairly and impartially lead this investigation. The events of last week i think called that so seriously into question that he really ought to recuse himself, in particular if hes raising an issue about whether members of the Transition Team were incidentally collected. He was a member of that team and i think theres a real conflict of interest. So i think it would be in the best interests of the investigation Going Forward if some one else on the committee were to lead it. We really need to get this back on track and i think the majority can start out by rescheduling this hearing. Weve urged them to do that but have yet to hear back. Congressman, lets talk about the substance of perhaps what you wanted to hear from sally yates. She was the acting attorney general. She informed the white House Counsel that their National Security advisor, Michael Flynn, had made comments that were perhaps untruthful. What did you want to hear directly from her . Well, i certainly wanted to hear the events that led up to Michael Flynns firing. What has concerned me about this for some time is according to newspaper accounts, she brought information to the white house that indicated that mike flynn had lied about a conversation he had with a Russian Ambassador and not just about any topic, this was on the subject apparently, at least according to reports, of the sanctions that president obama imposed on russia over russias interference in the election to help donald trump. So thats obviously a very significant conversation. It led to his firing when he misled the Vice President and the Vice President misled the country. But you have a period of some time, it looks like weeks, in which the president was aware that Michael Flynn had lied and the Vice President had misrepresented the country, misrepresented the events to the country, and the president did nothing about it. Do you think the white House Counsel didnt inform the president of that conversation with the acting attorney general . I would certainly like to know. I have to expect that the white House Counsel did inform the president. And the question is, why didnt the president act . Why was the president content to have the country misled about this secret conversation . And only took action with mr. Flynn after it was brought out in public by the Washington Post. That suggests that the real crime here was the publication of mr. Flynns lie, not the fact that the country was misled. I think those facts were facts the white house did not want to come out in this open hearing. The timing certainly raised a lot of questions about whether the white house preference had a lot to do with changing where this investigation was headed. Well, congressman schiff, thank you. Were out of time but we do have more questions for you so we hope youll return in the future. Sure. President trump is reversing course and saying he will have a health care deal, quote, very quickly. The president predicted last night that congress could reach a bipartisan agreement over a potential future plan. Todays cbs poll Shows Americans dont blame anyone for the failure but it failed because it just wasnt popular. Margaret brennan is at the white house with the president s message on health care. Reporter good morning. President trump appears newly confident about the possibility of striking a deal with senate leaders. At a dinner here at the white house last night, mr. Trump told a Bipartisan Group of 61 senators and their spouses that he wants to negotiate. I know that were all going to make a deal on health care. Thats such an easy one. So i have no doubt that thats going to happen very quickly. I think it will actually, i think its going to happen because weve all been promising, democrat, republican, weve all been promising that to the American People. So i think a lot of good things are going happen there. Reporter thats a stunning change in tone from just last friday when mr. Trump vowed to let obamacare fail and blamed democrats for the defeat of his Health Care Replacement plan in the house. Of course it was infighting within the Republican Party that sank that bill. Now, speaker ryan said tuesday hes not giving up and some lawmakers want him to keep negotiating. In the meantime, the white house is testing out new strategies, including how to take the existing obamacare system in a more conservative direction. As for working with democrats, thats not going to be easy, considering the pressure from their base to resist collaborating with mr. Trump. All right, margaret, thank you. Hillary clinton says the Republican Health care bills failure was a victory for all americans. The former democratic president ial candidate spoke last night at a businesswomans conference in San Francisco. She called the gop bill disastrous and said those who make decisions that affect peoples lives need to put themselves in others shoes. Thats what was so maddening about the debate over the health care revisions. I mean really, take away Maternity Care . Really, take away Mental Health and Substance Abuse care . Who do these people talk to . Do they not have any idea about the necessity and the suffering that goes on . Hillary clinton said the other side never quits, so democrats and their supporters will need to keep fighting back. Tomorrow norah will have the first extended interview with House Speaker paul ryan since the American Health care act was pulled from the house floor. Hell also discuss the future of the gop agenda. You can see that conversation tomorrow, right here only on cbs this morning. And now we have breaking news from washington, d. C. , where u. S. Capitol police fired shots at a suspect a short time ago. Police tell our affiliate wtop radio that a driver rammed a Police Cruiser and then tried to run over the officers. That suspect is in custody. This happened just southwest of the capitol near the Rayburn House Office building, which is now under lockdown at this time. Nearly 15 Million People in parts of texas and the southeast face a new threat today of Severe Weather. Tornados ripped across parts of western texas yesterday. At least 14 were reported. The violent system also brought damaging hail, some almost as big as tennis balls. As the storm moves east, states from the plains to the gulf coast are at risk. They could face dangerous conditions today, including possible omar villafraca has more. Reporter this is the second storm to blow through this week and last nights storm had some very powerful straightline winds. Now people are waking up to this, fences knocked down, pieces of their roof in the street and split trees. Overnight, severe storms swept across texas and oklahoma, with damaging winds, heavy rain and pounding hail. On tuesday, tornados tore through the western part of the state. Tornado on the ground, tornado on the ground. More than a dozen twisters were reported. Including this one near stamford that triggered warning sirens. Why dont you get over here and lets go inside. Reporter further south in the abilene area weve got our lowering right here. Reporter a funnel cloud darkened the sky. 100 miles north, three Storm Chasers died when their cars cloyded after one ran a stop sign. A tornado watch was in effect at the time. A blinding combination of rain and hail created brutal conditions on the roads. Some hail stones were large enough to smash through car windows. My back windshield was busted out and got glass all over my kids and hit my daughter in the back of the head. Reporter outside of lubbock, hail pellets blanketed the grounding. In oklahoma, the powerful storm blew over semi trucks on the highway. The worst of this storm system will now move into arkansas and louisiana today. People here in the arlington area are waking up without power more than 150,000 people still do not have electricity and there are more storms in the forecast for this weekend. Norah . Omar, thank you. Two years of brexit negotiations begin this morning. Britains Prime Minister officially triggered her countrys withdrawal from the European Union under article 50 of the eu constitution. Theresa may delivered a statement on brexit in the house of commons this morning. Her government still has to work out the details. Jonathan vigliotti is outside the houses of parliament. Jonathan, good morning. Reporter good morning. Triggering article 50 is really just a nice way of saying filing for divorce. Just like any split, leaving the eu wont be pretty. The sun has risen on a breakup many in the uk and throughout europe hoped wouldnt happen. But this morning in brussels where the eu headquarters is located, the paperwork is filed. This is an historic moment from which there can be no turning back. Reporter theresa may signed the official letter on tuesday. I want us to be a truly global britain, the best friend and neighbor to our european partners, but a country that reaches beyond the borders of europe too. The countdown is on. Reporter british news is already counting down the 730 days to the separation, right to the second. This twoyear divorce process could require britain to borrow as much as 73 billion. On the line, the Uks International trading relationships and free passage to the 27 other member nations. Negotiating between countries will be as complicated and hisoric as it sounds. What is for certain is that were getting back control of our country and in the future when we get things right or get things wrong, we will be in charge. Reporter the referendum to leave the eu or brexit was just narrowly passed last summer, and some who voted to leave said they were tricked by politicians who oversold nonexistent Health Care Benefits and promised to stop immigration. Prime minister may has already found a helping hand in the process from