Fbi director james comey makes a muchanticipated trip to capitol hill today. He will testify about what the fbi has learned about possible russian interference in the president ial election. Comey is also expected to be questioned about President Trumps explosive and yet to be proven claim that president obama had him wiretapped. The president spent the weekend in florida. Errol barnett is there. Lets just grow up. Reporter appearing on face the nation, Democratic House leader nancy pelosi slammed the Trump Administration for refusing to retract the president s wiretap claim. The justice department, the fbi, has to really clear this, because otherwise this administration has decided that they with impunity can say anything. Reporter fbi director james comey and nsa director mike roger also be asked for any available proof when they testify in front of the House Intelligence Committee on monday. Wiretap covers a lot of different things. Reporter on wednesday, President Trump suggested there is more evidence to come. We will be submitting certain things, and i will be perhaps speaking about this next week. Reporter but so far, no republican or democrat in congress has said theyve seen supporting evidence of surveillance on trump tower. Lawmakers are split along party lines over what to do about it. I would like to first get to the bottom of this before saying what should be done. I dont know the basis for President Trumps assertion. I have a lot of respect for susan collins, but i have to differ with her on this. She said we have to get to the bottom of this. There is nothing at the bottom. Reporter President Trump visited his golf course here for the second time this weekend. He spoke on the phone to the president of chile and continues to build momentum for his overhaul of obamacare. Tomorrow, elaine, trump hold askamp pain style rally in louisville, kentucky. Also on capitol hill, confirmation hearings begin for the president s pick for the Supreme Court. Tony dokoupil tells us what to expect from neil gorsuch and the hearings. Reporter judge neil gorsuch has been crisscrossing capitol hill hoping to win votes for his confirmation. If consfirme efirmed, i wille a faithful servant of the constitution. Reporter while supporters say he is calm and reasonable, his confirmation hearings may be anything but. Gorsuch himself has criticized the modern confirmation process as an idealogical food fight. Looking forward to the hearings where ill be asking him some tough questions. Reporter starting monday, senator al franken and as many as 19 others on if Judiciary Committee will get to grill gorsuch who will fill a seat vacated more than a year ago. I look forward with speaking with members on both sides of the aisle. Reporter gorsuch has degrees from columbia, harvard and oxford. Democrats are expected to portray him as qualified but unfit. Does viewing a seat in a partisan way undercut the authority of the court, which is not supposed to be a partisan body . Just because the president who nominated him and the senate that confirmed him might have thought about it as a political seat doesnt mean the justice him or herself has to behave in a political way. I took the task of this nomination very seriously. Reporter Committee ChairmanChuck Grassley says he expects President Trumps nominee to be sworn in some time in april. I think hes going to be an outstanding member of the Supreme Court. Reporter but if the battle turns partisan, it could take much longer. Tony dokoupil, cbs news, new york. There were two more security alerts at the white house this weekend. On saturday afternoon, a man was detained after jumping over a bike rack in a buffer zone near the white house fence. Hours later, another man was taken into custody after driving up to a check point and indicating to secret Service Uniformed officers that he had a bomb. Last weekend, a man was arrested after hopping the white house fence and roaming the grounds for more than 15 minutes before he was caught. Secretary of state Rex Tillerson met with chinas president today in beijing. It was the final stop on tillersons trip to asia, which had been dominated by concerns over north Koreas Nuclear and missile program. China is north koreas biggest source of diplomatic and economic support. President xi jinping is expected to meet with President Trump in florida next month. Three u. S. Troops were wounded today when an afghan soldier opened fire at a military base in southern afghanistan. A u. S. Military spokesman said Coalition Forces killed the soldier to end the attack. But an afghan Army Spokesman said the soldier made a mistake and did not deliberately target the americans. French officials conducted an autopsy today to determine if the suspect who attacked a soldier in paris was high or drunk at the time of the assault. Jonathan vigliotti has more on the terrorism investigation. Reporter elaine, the suspects been identified as a 39yearold french citizen who was known to authorities author his extremist beliefs, as well as a string of previous criminal convictions, including armed robbery. He triggered chaos saturday morning when he wrestled a rifle from a female soldier on guard at the airport. According to the french prosecutor, the suspect shouted he wanted to die for allah. He was shot dead by security forces. No one else was injured. The airport was shut down for several hours but has now fully resumed operations. He had been on the authoritys radar since at least 2015, when his home was among the dozens raided following the attacks that killed 130 people in paris. Authorities found no reason to arrest him then. After in weekends incident, the suspects brother, father and cousin were detained for questioning. Europe has been on a high alert after a wave of attacks in the last few years. An example of that, today in london, the metropolitan police simulated their own attack on the river thames. The training scenario involved terrorists hijacking a boat and taking everyone on board hostage. French authorities credit their increased security around paris for quickly stopping yesterdays attack. The exact motive is still unclear. The suspects father, who has now been released by police, said there were no signs his sod had been radicalized. Jonathan vigliotti, thanks. Coming up next, american volunteer doctors saving lives in a fierce battle against isis. ,,,,,,, the battle for mosul rages on. Iraqi troops, backed by u. S. Special Operations Forces and air strikes, have isis surrounded. Holly williams met with some american volunteers who werent fighting but saving lives. Reporter a few miles from the front line, americans treat critically injured iraqis. This woman was hit by shrapnel from an isis mortar. And shes losing blood quickly. They need to stop it to save her life. The next ambulance brings in an iraqi policeman. He has a gunshot wound to his shoulder. Kyle flair is normally a Critical Care nurse in santa barbara, california. Hes taken vacation to come to the war zone. Its scary, and the adrenaline is at its max and its peak. But everything fades away when we get to do what were trained to do. Is it taking a toll on you . It is. Its traumatizing seeing what ive seen. A lifeless girl, holding her in my hands and having to pronounce her dead. Reporter theyre called new york city medics. And theyve been sending teams to natural disasters for over a decade. [ explosion ] but this is the first time theyve come to an armed conflict. Something we have in the states is medication. Here excuse me. Yeah, go ahead. Reporter theyre on call 24 hours, because this war never stops. This time, its an iraqi soldier, hit in the eye by shrapnel. Another man has serious brain injuries and theres nothing they can do. Cathy, the groups team leader, held his hand as he passed away. I dont know if he knew i was there or if he knew i was holding his hand or felt anything. But i didnt want him to be alone. Reporter seeing this war has changed her, she told us. Theyre moms and dads and daughters and sons and sisters and brothers. Theyre just like us. And i just wish the world could really understand that the way i do now. Yeah. Reporter holly williams, cbs news, mosul. Tributes are pouring in for rock n roll pioneer chuck berry. The trail blazing guitarist and songwriter died saturday at his home near st. Louis. He was 90 years old. Mireya villarreal looked back at one of the 20th centurys most influential artists. Reporter chuck berry was the original guitar god, whose riffs were as smooth and unmistakable as his dance moves. Dubbed the father of rock n roll, his music was a blend, his first hit in 1955 maybelline thrust the st. Louis native into the spotlight. Well maybelline, why cant you be true reporter his musical career began at age 15. Throughout his career, he had several runins with the law, even spending time behind bars. Still, fans stayed supportive, connecting with his poetic story telling. In a 1972 interview with sunday mornings Charles Osgood, he broke down his song writing success. Everybody has to have money, everybody has a love affair, inspirations. These are things i write about. Reporter chuck berry paved the road for rock n roll greats like the beatles who k b. The beech beach boys sampled sweet little 16. Surfing usa reporter Rolling Stones guitarists tweeted, one of my big lighting has gone out. And former president barack obama said chuck berry rolled over everyone who came before him and turned up everyone who came after. Well miss you, chuck. Be good. His music underscored some of hollywoods history making moments. Including pulp fiction dance scene. And marty mcflys performance. The walk was a mistake that turned into berrys signature move. Ill never forget, i slipped and fell, but i rolled over and put it in the act and got back up. Reporter chuck berry was the first person inducted into the rock n roll hall of fame. At 90 years old, he was planning to release his first album in nearly four decades, solidifying his legacy and influence for generations to come. So long and goodbye to you reporter mireya villarreal, cbs news, los angeles. A wildfire forced more than a thousand people from their homes near boulder, colorado. The fire destroyed more than 60 acres in the hills west of the city. The firefighters are attacking the flames from the ground and the air. A prayer vigil was held in tennessee saturday night for a Teenager Police say was kidnapped last week by her high school teacher. A nationwide amber alert was issued for 15yearold elizabeth thomas, and 50yearold tad comings. Hes believed to be armed with two hand guns. His wife has asked him to turn himself in and return her unharmed. A louisiana cher ysheriffsy was shot and killed while investigating a rape. The suspect was wounded in the confrontation. The suspect was wounded in the confrontation. Anderson was a 17year veteran the suspect was wounded in the confrontatio. Anderson was a 17year veteran [joy bauer] two thirds of americans have digestive issues. Im joy bauer, and as a nutritionist i know probiotics can often help. But many probiotics do not survive your stomachs harsh environment. Digestive advantage is different. 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A growing number of Police Departments have especially trained officers and Mental Health professionals whose job is to respond to calls that involve people who are mentally ill or distressed. But still, those officers are in short supply. John blackstone shows us how the largest state Police Agency in the nation, the california Highway Patrol, is responding to the problem. Reporter encounters between the mentally ill and police too often end with gunshots. An Analysis Shows one in four Fatal Police Shootings involve someone who is mentally ill. Stay away from me reporter now the california Highway Patrol is using Interactive Technology to train officers to better deal with the mentally ill. Youre going to go with your dad to the doctor. Reporter trainers manipulate the scenario depending on how the officer reacts. In one situation, a woman threatening to kill herself occupies a school bus. I cant get off the bus, because something bad is going to happen to me. Maam, i do not want you to kill yourself. Im here to help you. Reporter even experienced officers say the virtual situations present a challenge. You dont know what youre going to go through because the scenarios can change on most of them. So its as real as its going to get. For a while, Mental Health was not something we talked about in law enforcement. Reporter omar watson. Were not clinicians or training our officers to be clinicians. Were just enables them to understand they have to take a step back, look at the different signs and differentiate whether somebody might be under the influence of alcohol or drugs or mentally unstable. Whats your name . Put down the knife. Put down that knife. Drop the weapon. Drop that weapon. Reporter mistakes are high. Something cadets are reminded of in a weekly ceremony for officers killed in the line of duty. Making the right decision can save lives on both sides. John blackstone, cbs news, sacramen sacramento. Sacramen sacramento. Still ahead, the films im joy bauer, and as a nutritionist i know probiotics sacramencan often help. Sacramento. Still ahead, the films try digestive advantage. It is tougher than your stomachs harsh environment, so it surivies a hundred times better than the leading probiotic. Get the digestive advantage. The third annual drone Film Festival took flight in new york this weekend. The awards are being given out tonight. Kenneth craig has the story. Reporter from the skyscrapers of new york, to the cliffs of abesa, drones are taking hobbyists and filmmakers to new heights and capturing extreme athletes in ways never seen before. It can go anywhere you want. And thats amazing. As long as the operator is good enough to put it there. Reporter director Randy Scott Slaven is gearing up for the third annual new york city drone Film Festival. A growing event he started after seeing an emerging number of drone videos without a proper outlet to showcase their work. Drones are all over the place. You see them on every film set and commercial set. You see them on tv all the time. Reporter but its not just for the pros. Amateur film maker doug armconnect scored these views of his familys wheat harvest. His nominated film beauty and bounty takes viewers inside the breadbasket of america. What were you able to do with the drone . The drone allows you to go high, to go low. You can get a really close shot, a still from the air or go up high and see the whole field. Reporter 32 films are battling for prizes in categories, including extreme sports, landscape, and documentary. People are really starting to understand the Creative Power of drones and starting to incorporate them. Reporter and he predicts this years nominees are just a taste of whats to come. Kenneth craig, cbs news, new york. When we return, the last weekend of winter means its ,, spring officially begins tomorrow, and with that warm thought, we end tonight with a look at an unusual winter sport that requires ice water in your veins. Heres adriana diaz. Reporter no one disputes the benefits of a daily swim. But when its 22 degrees out, diving in takes questionable sanity. Isnt it too cold . No. Reporter well, thats suggests otherwise. Every day, all winter, this mostly frozen river becomes a social club where seniors catch up. Hi, hello. Reporter some act more like kids at a pool party. Just look at these women, matching head to toe in secure of outfits. This woman is 58 years young. People watch thing are going to think you guys are crazy to get into water this cold. Yes, a lot of people think its crazy. But a lot of people think its healthy. Reporter groups like these come to beijings rivers and lakes every day to swim. And believe it or not, they say the wenter is the best time to come for the health benefits. Why is it good for your health . Its gymnastics for your blood vessels. It increases circulation. This veteran says hes living proof. You havent been sick in 40 years . Yes. Reporter and you think its because of this . Except my leg is broken because of skating. Reporter now the group is trying to get ice swimming added to the 2022 winter olympics. This is beyond physical evidence, this is an exercise in will power. We ice swimmers fear nothing. Fearless and fit. Who couldnt use a splash in that . Adriana diaz, cbs news, beijing. Thats the overnight news for this monday. For some of you the news continues. For others, check back with us a little later for the morning news and cbs this morning. From the Broadcast Center in new york city, im elaine quijano. Captions by vitac www. Vitac. Com this is the cbs overnight news. Welcome to the overnight news. Im elaine quijano. Fbi d