A teacher inspiring america with the power of music. Nightly news begins right now. From nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. The echoes of President Trumps explosive and inexplicable twitter accusations against former president obama over the weekend threatened to drown out todays big news. The announcement of a revised immigration ban. In uncharacteristic fashion, he signed the new order without the press corps or cameras on hand. The white house operate ng lowprofile mode as his spokes people try to catch up with their boss and the head scratching allegation that former president obama had ordered the wiretapping of trump tower during the campaign. But with no offer of evidence, democrats suspect its a Trump Associates and the russians. We get it started with hallie jackson. Reporter the rarely pressshy president staying behind closed doors today, standing behind his explosive, unproven claim that he was spied on by president obama. Quote, just found out that obama had my wires tapped in trump tower just before the victory. The president s tweets speak for themselves. Reporter sean spicer calling for a congressional investigation, which its the fbi that would know whether any such surveillance ever existed. The director asking the justice dont to publicly push back against the president s claim according to a senior u. S. Official, and former director of national intelligence, james clapper, who would have overseen any wiretap publicly denying it. And at this point you cant confirm or deny whether that exists . I can deny it. Near is order. Not to my knowledge. The russians are probably looking on gleefully as we discuss these issues. Reporter aides arent pin pointing where exactly the president found out the information he tweeted. Its working its way through conservative outlets. Thursday, mark levin. Were his phone calls intercepted and recorded . Reporter friday morning a breitbart headline, then the claims followed by a conversation with friend chris ruddy. He was not a happy camper, and he complained very loudly repeating stuff that was in these tweets that it was mccarthyism and watergatelevel type stuff. Reporter it would be a huge scandal if it happened, but theres no evidence that it did, just like the president s claim millions of people voted illegally, like past questions about where president obama was really born and cruzs father was involved with the assassination of kennedy. Even as President Trump has made claims with no obvious basis in fact, its hurt his credibility with voters, now it could hurt his credibility on the world stage if hes proven to not be telling the truth. Reporter a spokesperson for former president obama calls the claims against him simply false. And now with President Trump describing his predecessor as a bad or sick guy, new questions about their relationship. The press secretary today predicting both president s will be just fine. Now to that new executive order the president signed today temporarily banning travel to the u. S. From six majority muslim countries. It comes after the last travel ban faced a storm of protests. And got hung up in the courts. There are some notable changes in the new order, and the questions now, whats in it, whats out, and will it face any better if it goes be a heres nbcs peter alexander. Reporter nearly six weeks after President Trump first proudly unveiled his controversial travel ban, touting extreme vetting, a far more reserved rollout today out of public vow. The white house tweeting this photo. The formal announcement delivered instead by top cabinet secretaries. In is part of our ongoing efforts to eliminate vulnerabilities that radical islamic terrorists can and will exploit for destructive ends. Reporter whats changed . Removed from the original list . Iraq green cardholders now exempt, also deleted a preference for religious minorities. No longer singles out those from syria. Formerly banned indefinitely. The guidelines effective march 16, ten days from now, despite the president s initial claim that during any rushna o rush into our country. Sean spicer says the courts undercut that argument. Its a fullycoordinated effort. Reporter the ban is likely to face legal challenges with several states and the aclu reviewing their options. The language of the First Executive order all revealed that essentially what is going on is a ban against muslims. The fact that theyve tweaked the order doesnt eliminate that taint. Reporter this grad student is back in california. After the first ban, she was delayed for 23 hours at l. A. X. And then deported. She worries the new ban wont be temporary. When we look at history, whenever whole groups of people have been discriminated against, terrible things have happened. Reporter tonight white house aides say the new order was written to overcome potential legal washington states attorney general claims something of a legal victory today and has said he has yet to decide whether or not his state will fight this new executive order as well. Peter alexander, thank you. Now to a Late Development on capitol hill. Republican leaders released their longawaited bill that would replace obamacare. Speaker paul ryan says he wants it passed by easter. While it would keep some pieces in place, it also includes significant changes. Tom costello is in the washington newsroom. A lot of people wonder what the future of health yins insurance looks like. It gives states flexibility to set up their own programs and some of the more popular elements of obama car are remaining. Among those popular elements, the man will still require coverage after conditions. Current Medicaid Enrollment for lowincome americans will be frozen at current levels. And republicans want to use tax credits instead of subsidies to help people pay for insurance, based on age, not income. Critics argue tax credits wont help lowincome americans because they dont pay much in taxes to begin with. Democrats charge the republican plan will raise costs, cut benefits and provide coverage for far fewer americans. So the legislative process is just beginning. Theres still a lot to work out and surely a lot of arguing before all of this becomes law. Now to the new security procedures being implemented at airports across the country. The tsa is rolling out what it calls new, comprehensive pat downs for passengers. The agency hoping to make the secondary checks more uniform. Nbcs Miguel Almaguer rert checks. Reporter as airports brace for a spring break rush, passengers who trip metal detectors or require secondary screening may not see the difference at security lines, but they will feel it. When they get aggressive, and ive had that experience, i think its an invasion of my privacy. Reporter the tsa will no long earn use a variety of pat downs. Instead, the agency is implementing what they call a universal procedure thats more comprehensive. I didnt have anything to fear, i am not hiding anything, so i was okay with it. Let them do their job. Reporter the tsa says the new procedure does not involve any different areas of the body that were screened in previous pat down procedure. Theyll still be conducted bay officer of the same gender that could include sensitive areas like the breasts, groin and buttocks. Passengers can still request a private room for the pat down. The more invasive screening the down side of that is how much more personal privacy are we willing to give up. Reporter it comes after they failed to defect take firearms smuggled through check points 95 of the time during an audit two years ago. This is not going to benefit security. All it does is turnt checkpoint into a place of indecency. Reporter every day, 2 million passengers shuttle through screening, now some will feel the new handson approach to security. With 62 million passengers expected to travel for spring break, many are asking if busy airports like l. A. X. , what kind of impact this will have on lines and delays. Tonight the tsa says as of now there will be no impact. Miguel almaguer, thank you. Now to the new shock waves from the scand scandal rocking the u. S. Military. Were getting new information into the investigation of hundreds of marines who allegedly shared nude photos of marines on facebook. Reporter tonight according to a pentagon official, defense secretary jim mattis is troubled by the alleged behavior of marines after nude photos of more than two dozen female Service Members were circulated on a private Facebook Page with nearly 30,000 followers, called marines united, coinciding with the first female marines being assigned to an infantry unit in camp lejeune. One of those says being sexually harlsed online ruined the marine corps for me. The scandal first uncovered by the warhorse, run by thomas brennan, himself a marine veteran. Thats really what sent it home for me, seeing a woman that i knew, and then, you know, later on, the next morning, like getting my daugh reporter brennan now receiving Death Threats after reporting on the images, showing women in various stages of undress. Some of the pictures, he says, were taken without consent and identified some of the Service Members by their full name, rank, and duty station. From the marine leadership, harsh condemnation. Theres no place for this type of demeaning and degrading behavior in our corps. This includes our actions online. A formal inquiry by the Naval Criminal Investigative Service is under way, but no word on just how many marines were involved or how many were harmed. Hans nichols, nbc news, the pentagon. Right now, we are tracking Severe Weather threatening some 23 Million People from arkansas up through minnesota, kansas has already seen winds powerful enough to knock a tractortrailer onto its side on the highway. The storms also bringing the risk of tornados and large hail into the overnight hours. Theres been a new act of north korea, firing banned Ballistic Missiles overnight. And north korea is making the alarming claim that they were a trial run for a future strike on u. S. Military bases in japan is. The japan east Prime Minister says he will speak to President Trump about it tomorrow. We get more from our chief Foreign Correspondent richard engel. Reporter the white house calls north koreas latest missile test a provocation, as a top u. S. Defense official tonight confirms to nbc news that a major policy review is under way to confront and contain the threat of north koreas missiles and nuclear weapons. Earlier this morning, north korea fired five mediumrange missiles. One of them, u. S. Officials say failed at the site. The others flew about 600 miles before splashing in the water near japan. Hours later, north korea calling up 50,000 people for statesponsored displays of loyalty. I ten with these sorts of launches and other provocations in the weeks to come. Reporter the unpredictable kim jong un seems to be testing boundaries. Last month, north korea test fired a missile as President Trump was meeting the japanese Prime Minister as seen in social media images. And today, the north Korean Ambassador to malaysia left the country just before he was expelled. Malaysia has accused north korea of assassinating kim jong uns half brother by smearing chemical weapons in his face. North korea says the launches were practice for a strike on u. S. Military bases in japan. North korea often makes threats beyond its capabilities. That senior u. S. Military official told me a key part of the policy review, disrupting launches through sabotage and cyberattacks. Thanks. Still ahead, snoozing at school. The hightech idea some School Districts are embracing that has sleepdeprived studts focussed and better rested. Also from nap time to rap time, where the three rs stand for reading, writing and rhyming. Sure we could travel, take it easy. But weve never been the type to just sit back. Not when weve got so much more to give when you have the right Financial Advisor, life can be brilliant. Ameriprise lergies with nasal congestion . Find fast relief behind the counter with claritind. [ upbeat music ] strut past that aisle for the allergy relief that starts working in as little as 30 minutes and contains the best oral decongestant. Live claritin clear, with claritind. Dont let the food you eat during the day haunt you at night. Nexium 24hr. Shuts down your stomachs active acid pumps. To stop the burn of frequent heartburn. All day and night. Have we seen them before . Banish the burn with nexium 24hr. New pantene doesnt just wash i wiyour hair, it fuels it. Gain. Making every strand stronger. So tangles dont stand a chance. Because strong is beautiful. Were back now with what you might call an unusual or novel approach to dealing with sleepdeprived High School Students who nod off in class. Some schools have decided to go ahead and let them sleep it off in a nap pod, something you might have seen at the airport now moving into the schoolhouse. He beck. Reporter like so Many AmericanHigh School Students, overprogrammed and under stress, getting out of bed is a struggle for her. When Something Big is happening the next day, its harder for me to go to sleep. Reporter the National Institutes of health says teens need nine to ten hours of sleep a night, but only a third are sleeping eight hours. So youre averaging like four or five hours of sleep . Yeah. Yeah. Reporter are you tired all the time . I tray not to be, but yeah, its kind of like the normal now. Reporter while many high schools have tried delaying their start times, several in los las cruces, new mexico are trying a new approach. They take a nap for 20 minutes when the alarm wakes them up. We get them to calm down before the exam. Reporter so its sort of like a se button. Absolutely right. Reporter some parents were skeptical. Why are they not in science class or math class . They could be there, but they wouldnt be listening and they wouldnt be paying attention, so this way, we can get them to go back to class and focus. Reporter the pods were paid for through Mental Health grants through the state, costing 14,000. Most students use them just a few times a year, when they say theyve reached a breaking point. You are so recharged. Like youre just completely good. Reporter a siesta not for slackers but for kids trying to keep up in a demanding world. Katie beck, nbc news, las cruces, new mexico we are back in a moment with why this evening is such a sad one for so many movie lovers. Im on it. Weathertech. Made right, in america when youre close to the people you love, does psoriasis ever get in the way of a touching moment . If you have moderate to severe psoriasis, you can embrace the chance of completely clear skin with taltz. Taltz is proven to give you a chance at completely clear skin. With taltz, up to 90 of patients had a significant improvement of their psoriasis plaques. In fact, 4 out of 10 even achieved completely clear skin. Do not use if you are allergic to taltz. Before starting you should be checked for tuberculosis. Taltz may increase your risk of infections and lower your ability to fight them. Tell your doctor if you are being treated for an infection or have symptoms. Or if you have received a vaccine or plan to. Inflammatory bowel disease can happen with taltz. Including worsening of symptoms. Nows your chance at completely clear skin. Just ask your doctor about taltz. Nows youfeel free to be complyourself all day. Just switch from denture paste to seabond denture adhesive seals. Holds stronger than the leading paste all day. Without the ooze. Feel secure. Be yourself. With stronger, clean seabond. That just tastes better. With 10 times more vitamin e. And twice the omega 3s. Because why have ordinary when you can have the best. Only egglands best. Better taste. Better nutrition. Better eggs. A defeat in court today for advocates of transgender rights. The Supreme Court said today it will not rule on which bathroom a transgender virginia teen can use at school, and ited grimms previous victory in a lower court. This comes after a change in policy by the trump administration. Robert osborne has died, Television Viewers knew him as the face of Turner Classic Movies and a beloved hollywood historian. He was with the network from the very start, introducing old favorites ever since. Tcm says he passed away today in new york. Robert osborne was 84 years old. Are you trying to decide which airline to book for your next trip . Travel and leisure is out with its list of best airlines for customer service. For domestic flights, Virgin America followed by southwest and alaska. For international, singapore, followed by emirates and virgin atlantic. When we come back, inside a classroom where grades rise when the beat drops. Inspiring america is next. Nbc nightly news is brought to you by pacific life, helping generati longterm Financial Security for over 145 years. Fifty years ago, humpback whales were nearly extinct. They rebounded because a decision was made to protect them. Making the right decisions today for your longterm financial future can protect you and your family, and preserve your legacy. Ask a Financial Advisor how retirement and Life Insurance solutions from pacific life can help you plan for your future. Crsugar is everywherets sugar shield and crest complete has a sugar shield to protect teeth from sugar found in everyday foods. Crest complete. Shield your teeth from sugar. So sugar may visit, but its not sticking around. Burning, befoof diabetic nerve pai