President barack obama stepped off air force one into the history books sunday as the first sitting american president to visit cuba in 88 years. The president arrived with first lady, Michelle Obama and daughters. The president tweeted que bola cuba . Or whats up, coo ba. And said he is looking for wrd to meeting the cuban people today, barack obama became the first u. S. President to walk on cuban soil since 1928 when Calvin Coolidge arrived aboard a warship. President obama brought another symbol of american power, a delegation of Corporate Leaders including the ceo of xerox and executives from Companies Like marriott and starwood which just struck a deal to become the First AmericanHotel Operator in havana in nearly 60 years. They will tap a market long out of reach due off to the ongoing trade embargo that cut off communist cuba during the cold war. Scholar Peter Kornbluh said the island is ripe for investment. They see a market that is really ready for u. S. Companies and the professionalism and the infrastructure and the resources that u. S. Companies can bring. They see potential tourist hot spot that from here to eternity. Reporter when the castros accepted the 2014 offer to normalize relations they appeared willing to test the benefits of capitalism. Since then the u. S. Approved over 4 billion worth of business between the former foes. Loosened the travel ban, restrarted direct mail service and allows cubans to open Bank Accounts and earn salaries. A step that means athletes no longer have to defect to the u. S. To legally work there. While the cuban public is enthusiastic about the president s outreach, the castro government has been slow to make many of the changes that the administration asked for. Relations with the United States have to overcome the great obstacles of history. And there is still a suspicion that, this normalization process is a trojan horse. Designed to kill the cuban revolution with love rather than with aggression. In many ways that is the strategy. The Obama Administration hopes that increased financial opportunity will bring irreversible change to this authoritarian state. Michelle, tomorrow, president obama will meet cuban leader raul castro to press for more reform. All right, margaret. Thank you. France is working to bring a suspect in the paris attacks back from belgium where he was arrest fried ded friday and may been planning more attacks. As Charlie Dagata reports, more about Salah Abdeslams alleged role in the murd eers last yearf 130 people. Reporter turns out, Salah Abdeslam wasnt just a driver, a key operative in the paris massacre orchestrated directly by isis. The french prosecutor, accused the 26yearold of being the chief logistics man for the attacks. So far the investigation has turned up allegations that abdeslam purchased 12 detonators and explosive materials for the suicide vests, rented safe houses for fellow attackers, and had planned to blow himself up in the stade de france but lost the nerve and backed out. This is thought to show the arrest of abdeslam on friday, wounded in the raid by belgian Antiterror Police. He is now fighting extradition to france. Abdeslams lawyer is threatening to sue the french prosecutor for breaching his clients confidentiali confidentiality. Is he denying involvement . No. He is not. He is denying, he doesnt deny he was in paris. That there are a lot of matters. Reporter in a raid earlier this week, Antiterror Police found a stash of weapons and abdeslams fingerprints leading belgian authorities to believe he may have been planning another attack. The belgian government has been praising its antiterror forces for capturing abdeslam alive. Local leaders like francois shetland, the may of your molenbeek, face question house a manhunt that stretched to syria ended just a few blocks from where he grew up. If i am sitting here in america, looking at it, thinking what took you so long, he was right there in your neighborhood . Well, its a city here. Its 1 million people. You think you can findli easily terrorist here in a big city . Reporter now heap is a resident here, michelle. High security prison in bruge, a sect forcing high profile prisoners, especially trained guards and all the furniture and equipment has been bolted to the floor. Charlie dagata, thank you. Violence erupted this weekend at a Donald Trump Campaign rally. As mark albert reports, the republican frontrunner is defending his supporters and his Campaign Manager. Get him out of here, please. Get him out. Get him out. Reporter moments after donald trump denounce aid demonstrator wearing kkk headgear at a rally in tucson, a second person led out ahead of them was attacked. Punched, kicked, pummeled before the attacker calmly turned around to be arrested. Police had to call in reinforcements using 150 officers in all. Trump criticized their response. Security at the arena, the police were a little bit lax. Reporter Trumps Campaign manager, cory lewindowski, appearing to grab the mans collar. Trump said later he didnt touch the man and praised his top operative. I give hem credit for having spirit. He wanted them to take down the profanity laced signs. Reporter the gop leader was asked about the sight of a Campaign Manager confronting demonstrators. Getting involved isnt the answer. Reporter earlier saturday, protesters shut down the main road to a trump rally in phoenix. While in new York City Police used pepper spray and arrested two during a protest march to trump tower. Economic populism, xenophobia, race baiting and religious bigotry, the stools he formed, that is his campaign. Senator Lindsay Graham says trump has divided the gop. We about to nominate the one person that not only would lose in 2016 but would destroy the party for decades to come. I would rather lose without trump than try to win with him. Reporter donald trump scheduled to meet with Party Leaders tomorrow here in washington before he takes the stage at the annual convention of the American Israel Public Affairs committee. His rivals ted cruz and john kasich will also address aipac , well the road to the president ial nomination runs through three western states this tuesday. Republicans and democrats have primaries in arizona, and caucuses in utah and there is a Democratic Caucus in idaho. The big prize is arizona, especially for republicans where the winner takes all 58 delegates. Here is danielle maddingham. You know what . We are going to build the wall. Immigration at the heart of Donald Trumps weekend blitz through arizona. Illegal immigration is going to stop. It is dangerous. It is terrible. Trump is hoping his hard line will resonate with voters. Im scared for them because of deportation. Reporter democratic frontrunner Hillary Clinton drawing the battle lines running an ad in arizona where she comforts a young girl worried about deportation. I will do everything i can to help, okay. Reporter Bernie Sanders campaigning along the arizona border with mexico says he is also sensitive to the plight of immigrants. For republicans, the biggest battle now is a philosophical one. Trumps opponents, senator ted cruz and Governor John Kasich are doubling down on their attacks. Saying one of them should lead the charge to deny trump the nomination. And the other should drop out. Kasich says it wont be him. Nobody is calling me directly and asking me to drop out. And by the way, why dont they drop out. Reporter cruz campaigning in utah says he is not going anywhere. A vote for john kasich is a vote for donald trump. If they split the vote the man they hope to beat could benefit the most. The Investigation Continues into a deadly jet crash in russia. Officials found the black box and voice data recorders, but theyre badly damaged from fridays crash. Flydubai flight went down in strong winds killing all 62 people on board. The marine killed in iraq yesterday has been identified. Staff Sergeant Lewis cardin of temecula, california was 27 years old. He died in an isis rocket attack about 60 miles outside mosul. Pope francis made his debut on instagram just in time for palm sunday. His new account already has over 1. 4 million followers. Here is allen pizzey. Reporter pope francis abandoned his prepared palm sunday text to compare indifference to migrants and refugees arriving in europe to those who washed their hand of jesus ahead of his crucifixion. Making use of the wider audience the special day provided is typical pope francis. This weekend he embraced a way to reach out instagram. A sign he called beginning is a new journey. He picked up 1 million followers in 12 hours. The pope tweets in nine languages including latin to more than 25 million followers. He doesnt type his own tweets. Usually quotes from his speeches. But approves every one. His instagram pictures will be chosen by a senior media adviser according to vatican spokesman greg burke. You are not going to see, pope francis with a selfie stick here saying welcome to my home. But he knows how that can be important. He knows the importance of getting the image out. Reporter pope francis the second most followed world leader on twitter behind president obama. There is a certain irony to the leader of an institution that generally embraces change at a glacial pace having an online following the answer to the most fervent prayers of celebrities who measure worth in social media hits. This for a man who labeled social media, mental pollution and a gift of god. One of the great enigmas of this pope, the father says. The way he acts, the way he talks, the way he reaches out to people, is a great, great change. And the papacy will never be the same. Reporter he still hasnt made a major impact on church reforeign ministr reform or sex abuse scandal, the writer says. I think he has been given a pass on this because he has been such a wonderful inspiring figure. We are now in the fourth year of the pontifficate, he has to address this or it could very much damage his pontificate. It will take more than the common touch and breaking numbers on social media. Alan pizzey, vatican city. Spring break crackdowns have party towns going boom to bust. 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Day or night, geicos emergency Roadside Service is there for you. Spring break brings big business to beach towns across the south. But it also brings crime. Many communities are cracking down. As we report, new laws designed to stop the party are just forcing it to move elsewhere. Reporter the sounds of young people partying and opening beers on the beach. Are now silenced in gulf shores, alabama. This weekend, the city enacted an emergency order banning alcohol on beaches through april 17th. After more than 600 arrests since march 5th. Police lieutenant bill cowen. Most of the arrests come done to public intoxication, minor in possession of alcohol, those are the two biggest cat goers off rest. College students like hannah hicks and christian garing from texas a m think the police are being overly aggressive. Somebody was videotaping in a cops face. It is stupid reasons. I know we are drunk on spring break. We are adults. We are in college. We know what were doing. They act like we are children. Reporter gulf shores officials believe they became the hot spot after word spread on social media that nearby panama city, florida banned alcohol from its beaches last june. Newt ban in gulf shores is raising concerns that students could now move the party a few miles done to orange beach, alabama, which is dealing with an 800 increase of its own. In arrests this spring break. Dan rowe oversees tourism and conventions for panama beach. The city leaders were compelled to make changes because of incidents of young people behaving badly. Reporter last year an unconscious woman was allegedly gang raiped, and a shooter wounded seven, more than 1,000 arrested. Rowe said there are less problems and also less money. If college kids arent here, the businesses that cater to spring break market are taking the brunt of it this year. Reporter like sparky sparkman who owns spinnakers, his bar a ghost town with business down 80 to 90 . Its gone. You know what they say about something once its gone it really is tough to get back. Reporter in all, Panama City Beach enacted at least 20 new ordinances to crack down on bad behavior. Like gulf shores, will review the alcohol ban on their beaches before next march. Michelle. Thank you, jamie. Up next, we break down the trade deals that have been a hot topic on the campaign trail. U. S. Trade policy a hot button issue with candidates both sides trashing deals that they say cost america jobs. Nafta, cost us 800,000 jobs nationwide. Trade deals are killing our country. The question is are International Trade deals helping or hurting the American Worker . Here is cbs News Business analyst jill schlessinger, which is it . Little of both. North American Free trade agreement, 1984, the one Bernie Sanders said cost 48,000 jobs. Probably didnt. Probably a wash. And chinasen troo into the World Trade Organization was a game changer. Look at exporting and manufacturing in the u. S. Since then, down 9 . Chinese exports and manufacturing up by 12 . Remember overall. U. S. Consumers buy goods a lot cheaper since all the trade deals. Trade shuffles the deck. Who are the winners and losers here . Manufacturing has been a loser. Who should note manufacturing jobs actually peaked in 1979. So thats 15 years before nafta. Whats really changed the game . Technology. Automation. And when we look at those sectors around technology, we saw technology up 30 since 2003. And we should also note one big winner, the world, because we have seen millions of people lifted out of poverty. What about the folks back home . How do you help those people who lost their jobs . Not ripping up trade agreements. Trade wars are terrible for economies. Spending money on retraining and offering Financial Assistance in the form of tax credits. The best solution. Cbs News Business analyst, jill schlessinger. Thank you for being with us. Thank you. Still ahead, a flying horse with a harrowing story. A frightening crash at a formula one race in australia, driver Fernando Alonzo at the mercy of gravity after clipping another car. Amazingly he walked away from this wreck and said he feels lucky to be alive. If you were in los angeles yesterday, you might have seen a flying horse, or at least, dangling, one dangling from a helicopter. The horse had fallen into a ravine and an air lift was the only way out. The horse was a little disoriented but not hurt. New video shows something perhaps never before seen by human eyes. A blue whale nursing its calf, or at least thats what scientists believe is happening here. Images were taken off new zealand. Coming up, while many were sleeping the ,,,,,,,, we end tonight with some new beginnings. Here in the east spring arrived at 12 30 a. M. Shortly after that a noteworthy arrival on washington, d. C. s eaglecam. Reporter just after 3 00 this morning, dc 3, finally appeared on a live webcam. Its parents scrounged up food for the new baby and the 2dayold sibling. Social media is now celebrating both birds. Dr. Jill biden wrote, congratulations to mr. President and the first lady on the arrival of two eaglets. The proud parents are known as mr. President and the first lady because theyre the first mating pair to nest in the d. C. National arboretum in nearly 730 years. Why do you think people are so obsessed with this webcam . I think because it is the american bald eagle, our nation has always loved that, that bird, our national symbol. And its its funny theyre in the capital. Reporter watching animals for hours at a time is a growing phenomenon. Last year millions watched panda bear meijang give birth to twin pan diaz. Only the third set born in the United States. At the national arboretum, a message below the live eaglecam warns viewers you could see anything from sibling rivalry to predators. I think with all the political turmoil going on, these little eaglets are something we can agree on. Democrat, republican. Democrat, republican, independent, socialist, from, wherever you are. We can all get behind the eaglets. Reporter in a few weeks the public will come up with names for the eaglets. Because to the many that watched this family is part of theirs too. And thats the cbs overnight news for this monday. For some of you, the news continues. For others, check back with us a little bit later for the morning news an