Time in north korea off allegations he stole a banner. We begin this morning with a look at todays eye opener. Your world in 90 seconds. This is another super tuesday for our campaign. Clinton and trump pile up the delegates. I want to congratulation donald trump on his victory, a big victory in florida. Nothing like it. Lies, deceit, viciousness, disgusting reporters, horrible people. A long night for donald trump. A speed bump but the question is is it a road block . I have to thank the people of the great state of ohio. I love you i love you president to defy republicans and nominate a federal judge to replace the Late Supreme Court justice antonin scalia. Otto warmbier sentenced to 15 years of hard labor. A disaster from rising floodwaters is catastrophic. We have not seen nothing like this except on tv. Capital. Hours. Its going to be tough. A small plane skidded in on its belly in california. Scary moments for the five people on board. All that. Skies are mostly clear. A bird has been attacked leather jacket. The worlds most famous the screen. Why does it have to be snakes . Sit down. Alargo. You dont have to stand. Do you think you will be invited . I dont think so. Cnn dubbed today super three. Super tuesday number three. Super tuesday three. Super tuesday, round three. Did we learn anything from today will than an expensive letdown. Announcer this portion of cbs this morning sponsored by toyota. Lets go places welcome to cbs this morning. We begin with breaking news on the Supreme Court vacancy. President obama Just Announced he has chosen a nominee to replace the late justice antonin scalia. In a statement, the president says, quote, this american is not only eminently qualified to be a Supreme Court justice, but deserves a fair hearing, and an up or down vote. Today, i am fulfilling my constitutional duty in doing my job. I hope that our senators will do their jobs, and move quickly to consider my nominee. Scalias death last month left the court evenly divided along ideological lines. Jan crawford is in washington reporter good morning. During a monthlong search, the president really focused on a few highly regarded federal Appeals Court judges and leading contenders are both here on the d. C. Based federal Appeals Court. Merrick garland ask a is a federal respected judge and sri srinivasan. Another one the president considered was paul watford. The fight over the nomination already has begun. Republicans are yuted united and will not hold a hearing regardless of who obama nominates saying in the middle of an Election Year the decision should be made by the next president. If the president nominates garland who is no liberal fire brand, it would signal he is hoping for some kind of compromise. Garland is considered the best candidate that republicans could hope for from a democratic thank you very much, jan. The latest primary results have the frontrunner celebrating and one challenger heading home. Donald trump and Hillary Clinton recorded a string of important wins. Marco rubio ended his campaign after big loss in his home state. Trump won in florida, illinois, and North Carolina and leads ted cruz in missouri which is still too close to call and john kasich is still in the mix after winning his home state of ohio. Trump has more than half of the delegates he needs to win the republican nomination and last night, he widened his lead over ted cruz. In last nights race, hillary widened her lead in the delegate count and includes an overwhelming share of super delegates and has almost twothirds of the number she needs to clench the nomination. Nancy cordes is following the democrats. John dickerson is here to analyze the outcome. Garrett in palm beach, florida, where trump celebrated last nights victories. Reporter good morning. Donald trump need to win half of the remaining delegates to clench the nomination. If not trump and his republican foes, establishment and otherwise, will have to fight it out at a contested convention. We are going to go forward and we are going to win but, more importantly, we are going to win for the country. Reporter donald trump celebrated big swing state victories tuesday nice and paused to ponder the question, why attacks against him dont appear to stick. My numbers went up. I dont understand it. Nobody understands it. My numbers went up. Reporter trump won florida handily. Typically, that cements a republican hold on the nomination but not this year. I want to congratulate donald trump on a big victory in florida. Reporter but it knocked marco rubio out of the race. This will leave us not only a fractured party but a fractured reporter rubio lost to trump by nearly 20 points. After tonight, it is clear that while we are on the right side, this year, we will not be on the winning side. Reporter john kasich secured a crucial win at home in ohio. I labored in obscurity for so long. People counting me out. Reporter kasichs first win spoiled trumps bid for a perfect night. He vowed to campaign until the partys convention in cleveland. We have got one more trip around ohio this coming fall where we will beat Hillary Clinton and i will become the president of the United States reporter ted cruz finished second in illinois and North Carolina with missouri too close to call, enough he said to claim incremental progress. Tonight, we continued to gain delegates and continue our march to 1,237. Reporter and cruz zeroed in to those who supported marco who worked so hard, we welcome you to open arms. Reporter trump sounding more and more like his partys leader. I spoke with Mitch Mcconnell today. We had a great conversation. The fact is we have to bring our party together. Reporter both kasich and cruz argue that trump cannot win the nomination outright but their math consumes an antitrump vote and that rubio supporters and his unbound delegates. That is a lot of variables. With cruz and kasich still in the race, donald trump has the delegate lead and continues to face a divided opposition. Hillary clintons path to the nomination is much clearer this morning. The former secretary of state rebounded in the midwest after losing last weeks michigan primary. Clinton won by 13 points in ohio where Bernie Sanders thought he could pull off another surprise she also won florida by 31point landslide. Nked is nancy cordes is in west palm beach. Reporter good morning. This was, apparently, clintons most dominate night of the campaign so far. She shut sanders out nearly everywhere and her campaign this morning wont describe her delegate lead as insurmountable, but they do point out its twice as large as president obamas ever was in 2008. Thank you, florida thank you, North Carolina thank you, ohio reporter and clinton celebrated. Sanders didnt even mention his losses to a crowd of more than 7,000 in arizona. Go on. Phoenix, are you ready for a Political Revolution . Reporter according to cbs news exit poll results, voters in all five states said clinton would make a better commander in chief than sanders. Every candidate owes it to you to be clear and direct about what our plans will cost and how we are going to make them work. Running for president and being president. Reporter the sweep was a huge relief for clinton, who openly worried earlier in the complacent. People think they know who is going to win. Nominee. They may not be turning out and we just cant afford that. Reporter her surprise loss in michigan last week, may have given them the jolt they needed. Her wins in ohio and illinois will blunt sanders argument that clintons strength is largely confined to the south. 2 million more votes nationwide reporter she is now nearly twothirds of the way to the democratic nomination, and had harsh words last night. There is great anger. Nominee who was just a few miles away. Our commander in chief has to be able to defend our country, not embarrass it. Reporter her aides say she will not be calling on sanders to drop out. About half of the states still havent voted and they point out that she stayed in until the very end in 2008. And, in fact, charlie, there are a number of caucuses coming up in western states now where both campaigns expect that sanders will do well. Thanks, nancy. Cbs news political director and face the nation moderator John Dickerson is with us. John kasich winning in ohio and denying trump of 66 delegates does that mean the republicans who oppose donald trump can stop him getting enough detings legates before the qings convention . They hope so. That requires them continuing to the question whether senator cruz peels the votes away or kasich does, but it gives them a little hope. I know its early in the morning and i apologize for making you do the math. For john kasich to win the nomination, he would have to win 115 of the delegates . Bring new states into the union and win those delegates. The strategy is to stop trump . Yes and get to cleveland where the convention is held and have a convention fight. Even in that strategy he has somebody in front of him which is ted cruz and cruz will have delegates there and closer to trump but trump has a strong argument at the convention he is likely to be i have more delegates than anybody else and if he doesnt get to the magic number hell have more delegates and that is a strong argument. The polls closed at 8 00 and 8 15 marco rubio said im out. What did you make of his speech . He talked about fractured nation and fractured party. Dark and that was his content and the way it looked. He said there is no more hope and optimism in this race and that was a pretty extraordinary thing to say, that hope and optimism are gone from the race. He congratulated himself for not being angry and not running his campaign on anger but that is what he was aiming at. Where do his supporters go now . I think probably a little bit to kasich but some might go to cruz as the way to stop donald trump but we have to see. I think they go more to kasich but split. An interesting point in the New York Times saying but donald trump and Hillary Clinton resounding triumphs on tuesday masked a profound historic and most Americans Still dont like him or her. Long time. Maybe you go back to Grover Cleveland versus james g. Blaine. Two nominee parties who had big challenges facing them. At the moment, we have people who are not seen by the larger electorate. 30 in ohio said they would not vote for trump. These are candidates with issues. Next half hour, we will show you what a contested Republican Convention could look like and how the Convention City is preparing for possible violence over the outcome. That is ahead right here on cbs this morning. Violent weather pounding the midwest left a trail of destruction. There are reports of multiple tornadoes tuesday that touched down. Animals were rescued when one hit northwest of springfield, illinois. High winds knocked over trucks and damaged homes and hail the size of golf balls poured down. No one was hurt. Light inc. Strikes over Downtown Chicago but flooding is still a major concern in the south. Cars are trudging through flooded roads this morning in eastern texas. Where much of the town is under water. Look at you wow reporter if i look hazy, its not because the lens is blurry or something is wrong with your television, its the fog hanging over this texas flooding. The water is moving south to the gulf of mexico its dropping in some places. I just spotted a little dog stranded in the water. We are going to try to help him when we get off the air. For now, the water is rising. The river is cresting and it has been the last 12 hours and they havent seen this kind of flooding here in east texas in more than 100 years. From the air, the damage to communities in southeastern texas is unmistakable. Parts of the vital interstate 10 along the texas louisiana border are shut down as the river rises to record levels. Pin deweyville, hundreds of homes are damaged from some of the worst flooding this town has ever seen. Lots of people in deweyville their homes are flooded completely. Reporter mark mccall is the fire chief. Oh, its devastating. We have gone through two hurricanes and we didnt see. This we have gone through droughts and fires, but this rising water like this, we have never seen this. Reporter we rode along with rescuers as they checked on people. Left behind, stranded dogs. Oh, poor thing horses. And other pets. Along with those people still refusing to leave despite the mandatory evacuation order. The house full of water, i leave. Until then, no, im staying right here. People were born and raised here are going to rebuild and save it. Reporter our hats off to the fire chief you just saw. His home is flooded so he is trying to take care of that and also deal with the rescues and calls he is getting for emergency help. As of right now, here is what is about to happen. Interstate 10 rush hour is about to begin and its closed in both directions. Line east and westbound, both shut down because of flood water. Incredible story there. David, where is that dog . We are all here concerned about you helping out that dog. He is right there on the chair. I sat on the top on the wood waiting to go live and i heard something wrestling behind me and he woke up. He is shaking and looks hungry and nervous so we will call with one of the rescuers we were with yesterday and get him out. We didnt want him to drown while you were doing your live shot. No, no. The nations second busiest Transit System is closed this morning for a critical safety inspection. Washington metros unprecedented 29hour shutdown is crippling the commute for nearly 700,000 daily rirs ders. The d. C. Metro has 91 stations along nearly 120 miles of track. Mcpherson station. What is going on . Emergency inspections. There was a tunnel fire here on monday, an electrical fire and led to this systemwide safety concern. Crews will nak through snake through tunnels cables. The concern is potential erosion that paw owers the rails and train system. The chief said it was the only choice. The safety of the public of my employees is paramount. Reporter district employees and student are urged to rely on the citys bus service. I wonder if it will be up in 29 hours. The traffic is going to be terrible. Out of the blue, every line shut down for one day is a bit concerning. Im just trying to deal with what i know and what i fear. Reporter for Transit System leaders fear is a repeat of last person was killed after power cables generated hazardous smoke conditions. The electrical fire early monday in a tunnel closed three lines for repairs. Happened twice in a year. So i cant wait for the third time. Reporter just last week, he sounded the alarm when he spoke to the National Press club about the 40yearold rail system. Its much worse than i expected and maybe even publicly we have been talking about. Reporter they hope to reopen the system in about 24 hours. But that, of course, depends on what they find with these emergency inspections. Ride shares across the city are offering promotions, but the concern for millions of commuters today . Gridlock. Gayle . Jeff, what a mess. I hope she sort it out soon. One of the nations biggest cities promises highspeed Internet Access for everyone. That is ahead. First, its time to check announcer this portion of cbs this morning sponsored by weathertech, American Made car mats and floor liners. A Young American is sentenced to years of hard labor in a north korean prison. Ahead, find out what led to this harsh sentence and what happened to other americans being held there. The news is back in the morning right here on cbs this morning. 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