News after the sudden death of Supreme CourtJustice Antonin Scalia. He was a powerful conservative voice, dedicated to defending the constitution against what he saw as the nations liberal drift. His death marks the end of an era. And leavesa eight justices, often evenly divided on highlycharged issues. Tonight, as the flag flies at halfstaff outside the Supreme Court, the battle is set. The future and direction of this branch of government at stake. We begin with jim avila in el paso, texas, tonight. Reporter Justice Antonin Scalia died behind the drawn curtains of this room. Peacefully and in his sleep. I was a firsthand witness. Reporter on this ranch in west texas, scheduled to hunt quail saturday. His body discovered when he lunch. He was totally peaceful, hes a man that went to sleep and just didnt wake up. Reporter the highend Hunting Lodge and ranch was host to an exclusive group of mostly texan couples. Justice scalia was the only famous guest. He arrived friday about noon, toured the property, did not join in the hunt, but attended dinner. At 9 00 p. M. , he said, its been a long day, had a long week. Id like to be excused. Reporter others told investigators they heard the 79yearold justice mention an illness. The county judge that pronounced him dead over the phone said his doctor in washington told her hed been ill. The scalia family, his wife, she and after talking with investigators and u. S. Martials on the scene, says she agreed one was not necessary. Any signs of foul play could have easily caused, that i asked for an autopsy. Reporter instead, the death certificate will read natural causes, due to his heart stopping. Tom . Thank you. Justice scalia was a larger than life figure on the bench and off. He fought hard to defend his positions, but he was able to keep the fight from getting personal. Terry moran, closely watching Justice Scalia in action, and reporting on his legacy. Reporter for decades, Justice Antonin Scalia led the charge to take constitutional law back, he says, to its original meaning. It was not meant to facilitate change. It was meant to impede change, reporter perhaps his greatest triumph, his ruling on the right to bear arms. Where he brushed aside concerns about gun violence in america. Its not the role of this court to pronounce the second amendment, he wrote. We owe no apology whatsoever for bush versus gore. We did the right thing. So so, there. [ laughter ] [ laughter ]. Reporter in dissent, he was biting, caustic, clear. He sneered, we should start calling this law scotus care. And he challenged the idea that the court could create a right to gay marriage. After 200 years of laws banning it. When did it become homosexual couples from when did the law become this . Reporter he loved a good argument, but made friends friends with ruth bader we agree on a whole lot of stuff. Kneejerk stuff. Reporter leaving the court shorthanded, and sharply divided, 44, on things like affirmative action, and president obamas Climate Change policies. And one of the justices swings to the liberal side, unpredictably. Tom . That leads us to our next story. Theres so much at stake, but Justice Scalias seat looks to be vacant for a while. Mitch mcconnell rushed to say the decision should be left to the next president. At least a year. But president obama is vowing to move ahead. Heres jonathan karl. Reporter the battle lines over Justice Scalias replacement on the Supreme Court republican president ial candidate ted cruz tweeting this five minutes the Supreme Court or scalias family confirmed he had died. Justice scalia was an american hero. We owe it to him, and the nation, for the senate to ensure that the next president names his replacement. Less than an hour later, Senate Majority leader Mitch Mcconnell declared, this vacancy should not be filled until we have a new president. But president obama, who praised scalia as one of the most consequential thinkers ever to serve on the court, made it clear hes ready to fight over replacing him. I plan to fulfill my Constitutional Responsibilities to nominate a successor in due time. Reporter Election YearSupreme Court confirmations are extremely rare. The last president to nominate and confirm a justice in an Election Year was fdr, 76 years ago. But even then, his party controlled the senate. Although scalia became a hero to liberals, his own confirmation was entirely uncontroversial. He was approved 980. Even joe biden voted to confirm him. The battle to replace him will play out in congress and on the campaign trail. Its already happening. We should not allow a lame duck president to essentially capture the Supreme Court in the waning months of his presidency. It is outrageous that republicans in the senate and on the campaign trail have already pledged to block any replacement that president obama nominates. Reporter as for who president obama will nominate, he will likely choose a candidate republicans respect. Such as merrick garland, chief judge of the d. C. Circuit of court appeals, a moderate who has won praise from republicans. Jane kelly, confirmed unanimously by the senate as a Circuit Court judge in 2013. And finally, sri srinavasan, who was confirmed as a circuit judge 970 just three years ago and served in the administration of he would be the first asian justice. Jon joins us now from the white house. Would it make a difference if president obama would nominate a judge that has already been confirmed . But to a lower court . It would certainly give the white house a talking point. But the bar for a Supreme Court nomination is much higher, especially for this one. With Justice Scalia being a conservative icon, and with the potential to switch the balance of power to the liberals. And dan abrams is here. Without Justice Scalia, you have eight justices on the bench. What happens in a 44 tie in a decision . There would be a tie. That means the Lower Court Decision would stand. But its not precedent. That means the case could end up again. Justice scalia and the court were about to hear a case about shutting down abortion clinics. What happens . If they were to split, then the Lower Court Opinion would stand. The lower court basically sided with the supporters of the law. That would mean the clinics could come to the Supreme Court at a later date. Dan, thank you. Scalia talking about him tonight. Justice. The best way to understand him is to listen to him in his own words. A man that has made no enemies is probably not a very good man. Reporter a conservative maverick, Antonin Scalia was never one to run away from a fight. Arguments. I love to argue. Ive always loved to argue. It may be i am something of a his mind. And seemingly incapable of backing down. Im in the business of enforcing democracy. On controversial issues, we persuade each other, and voted on it. Reporter making lasting friendships on the bench. Ive criticized opinions and weve remained friends. Just as theyve criticized my opinions and weve remained friends. Reporter and never losing his step. I will certainly retire when i perceive im not as good as i used to be. That ive lost a step. Tonight, Justice Ginsberg saying, he was a jurist of captivating brilliance and wit. With the rare talent to make now, the death of Justice Scalia, a blow to his friends and family. But also to the conservative movement, the opening topic at last nights Republican Debate in south carolina. After that, the candidates moved on to an allout brawl. Cecilia vega with the highlights. Reporter in a debate filled with fireworks im sick and tired of him going after my family. My dad is the greatest man alive in my mind. [ applause ] while donald trump was building a reality tv show, my brother was building a Security Apparatus to keep us safe. And im proud of what he did. [ applause ] the World Trade Center came down during your brothers reign. Remember that. Reporter there was one moment of agreement. I do not believe the president should appoint someone. Reporter the battle to name a new Supreme Court justice now playing out smack in the middle of the race for the white house. All six gop candidates on that stage calling for Justice Scalias replacement to come after president obama leaves office. Delay. I think that we ought to let states decide who is going to run that Supreme Court with a vote by the people of the United States of america. [ bell ] reporter ted cruz vowing to take the fight to senate floor. The senate needs to stand strong and say were not gonna give up the u. S. Supreme court. Reporter but that agreement over the Supreme Court coming to a screeching halt, from a Cruz Marco Rubio grudge match. First of all, i dont know how he knows what i said on univision because he doesnt speak spanish. [ speaking spanish ] reporter to the word of the night when you point to his own record he screams, liar, liar, liar. Reporter hurled at one another no less than 13 times. You are the single biggest liar. You are the single biggest liar. He lied about ben carson in iowa. Thats another lie. Lying about all sorts of things. Thats another lie. Reporter and now the focus turns back to the campaign expresident s. George w. Bush hits the road for his brother for the first time right here. His very first trip to florida so far this race. Tom . Cecilia, thank you. And we do move on to the arctic chill and looming winter storm. Temperatures well below freezing in the northeast. The coldest morning in boston in more than half a century. Here in new york, everyone bundled up against the belowzero cold. In missouri. Part of a storm delivering snow, ice, and heavy rain. A sloppy start to the work week. Phillip mena has it all. Reporter whiteknuckle driving tonight across the midwest. Heavy snow bringing whiteout conditions outside indianapolis. Triggering multiple pileups. Injuring at least ten. Tonight pennsylvanias i78 is back open tonight after this massive pileup saturday, killing three and sending dozens to the hospital. That blast of arctic air sending temperatures plunging to lows not seen in years. Reporter new york city hitting minus 1 degree, the coldest day in new york city in 22 years. Its, like, whipping you in the back of the head, it hurts its like being on a roller coaster. Reporter boston even colder 9 below but feeling like minus 36. For those braving the elements, it was brutal. 150 firefighters battling this fire for hours in philadelphia, the water meant for the flames turning to ice, encasing this car. In new hampshire, 40 people had to be rescued from a mountain tram. The temperature there 0. Right behind this cold, a mix of snow, ice, and heavy rain pushing east, from the south all the way up the coast. A messy start to the week, but the good news is, this storm is bringing with it relief from this bitter cold. Tom . A painful type of cold out there. Phillip, thank you. Still ahead tonight, a encouraging speeding . A fiery crash, three young women dead. Did Snapchat Play a role . And later, the dramatic rescue of an injured hiker caught on camera. Well have the latest. I take pictures of sunrises. Its my job and its also my passion. But with my back pain i couldnt sleep. So i couldnt get up in time. Then i found aleve pm. 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Surveillance video showing the girls speeding by moments before the crash. Abc affiliate wpvi now reporting investigators are looking into whether the popular app snapchat also played a role. One victims uncle says they were using an app. One friend said she was snapchatting all night. In the car they were showing their speed, how fast they were driving. What they were doing. Reporter he says his niece was using a special filter on snapchat which snaps, or records, their speed. A popular trend he believes encourages people to drive fast and share with friends online. The fact that that part of the app is on there seems irresponsible. If that happened, it helped to kill my daughter. Reporter a snapchat spokesperson telling abc news they take distracted driving seriously, including a do not snap and drive warning message when this geofilter is first accessed. Gias family, now warning others. Death of my niece, but i hope someone gets something from this and puts it down while they are in the car. Reporter tom, gias family is planning to subpoena her final snaps in hopes that it helps give them some closure. Tom . Eva, thank you. Coming up, finishing what a terrorist attack stopped. Eagles of death metal returning to paris, determined not to let the terrorists win. And a hiker injured in the remote mountains of california. His dramatic rescue, caught on camera. Because you believe in go. Onward. Todays the day. Carpe diem. Tylenol 8hr arthritis pain has two layers of pain relief. The first is fast. The second lasts all day. We give you your day back. What you do with it is up to you. When youre living with diabetes, steady is exciting. Only glucerna has carbsteady, clinically proven to help minimize blood sugar spikes. So you stay steady ahead. Guys, its just the two of you. The setting is just right. Theres something in the air. 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The group set to resume that concert on tuesday. Survivors of the shooting expected among the soldout crowd. And frightening moments when a bus filled with teenagers burst into flames. The bus was carrying middle school kids on a ski trip in Washington State yesterday when fire broke out. To get out safely. Local troopers say an oil leak may have sparked that fire. And, caught on camera. The rescue of a 69yearold hiker who fell down a 100foot ice chute. Fellow hikers outside of los angeles found the man struggling after the fall. A chopper hoisted the injured man to bring him to safety. Still ahead, it is valentines day. The secret to staying in love for more than 80 years. Plus, the teen with more valentines than anyone else. The extraordinary ways that some are spreading love. Stay with us. Ordinary objects often seemed. Intimidating. Doing something simple. Meant enduring a lot of pain. If ra is changing your view of everyday things orencia may help. 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But also a rookie, a teenager with all the right moves. John donvan plays dr. Love. Reporter the weird prediction made about this day in ghostbusters ii 27 years ago. According to my source the end of the world will be on february 14th in the year 2016. Valentines day. Bummer. Reporter she said her source was an alien. Whatever. On with the stunts. We have john and ann betar, both over 100 years old and married 83 years, giving relationship advice on twitter. We hang onto one another. Just a few little hugs and were fine. We have brian and florestina stewart, a small businessman and a phd holder in organic chemistry, making the waffle reporter and we have a High School Senior named hayden godfrey. I want to make as many people happy as possible. Reporter who gave a flower this week to every single girl in his high school. 800 flowers cost him more than 500 bucks. A gesture appreciated by the recipients. I just thought it was so cool. Reporter and admired by haydens girlfriend, too. So, note to aliens. Were still here this valentines day. So far, anyway. John donvan, abc news, washington. We thank john for that story. Gma first thing in the morning. David muir will be right back here tomorrow night. Good night. Heres a sneak peek at tonights afv. We know youre gonna love it. Hello [ screams ] [ screams ] [ yelling ] welcome to americas funniest home videos. And now here he is, the host of our show. Alfonso ribeiro hey, thank you. Thank you. Hello and welcome to the show. Have you noticed that as you get older, time starts to move faster . And when youre having fun, like we do here on afv, time flies even faster . I sure have. Anyway, thats our show. Well see you next time. [ audience groaning ] what . Actually, no, no