Cecilia, the race heating up with just 27 days to go for the first votes. Reporter oh, but whos counting, right . Exactly. Reporter good morning to you. All eyes on iowa. Those caucuses right around the corner. A sign this race is hotter than ever, take a listen to this. Bill clinton has been in Donald Trumps direct line of fire for a few days now. But finally, the former president is speaking out for the very first time. Overnight, donald trump stirring up this crowd of thousands with a onetwo punch. Hillary, hillary, lets say hillary is president. Oy. Oh. Reporter and just a few miles away. Its kind of scary this year. Reporter Hillary Clintons husband on his first Solo Campaign trip this election taking some notsosubtle jabs right back. When there is discrimination against africanamericans or hispanics or muslims, just because of who they are, i dont like that. Reporter bill clinton not recent tactic dredging up those past scandals. This is a woman that has been really an enabler. And thats not a good situation for hillary. Reporter so i asked, donald trump says your past is fair game. Ive got to ask you, you keep coming up on the trail with him. Is it fair game . And after a long pause, finally an answer. The republicans have to decide who they want to nominate. Im trying to tell now the democrats and the country why i think hillary would be the best president. And i think theres always attempts to take the election away from the people. Reporter trump taking his offensive to the airwaves, too. Hell stop illegal immigration by building a wall on our southern border that mexico will pay for. Reporter his First Campaign ad just released and already under fire. This image of a flood of immigrants racing toward what appears to be the u. S. Border in mexico. 5,000 miles away in morocco. Trump now on the defensive. That was just video footage. Its just a display of what our countrys going to look like. Were like a third world country were a dumping ground. So you can just take it any way you want. Reporter for her part, Hillary Clinton trying to stay above the fray, with a new donald trump strategy in the new year. Ive adopted a new years resolution. [ applause ] im going to let him live in his alternative reality and im not going to respond. Okay, cecilia, that new years resolution from Hillary Clinton and you could feel bill clinton biting his tongue when you asked him that question. Yeah, he seemed to pause like he seemed to be staying on message yesterday, this might be the bill clinton of the 2016 race. We talked yesterday about how he got in trouble in 2008 for going off message. This time around i think youre probably going to see a more subdued bill clinton, at least for the time being. The words that are being used much knows his role this time around. That he is, in fact, the supporting actor, if she is the star of this show. Okay, lets talk about that now with matthew dowd, our political analyst. Matthew, you think hillary should make another new years resolution not to use bill clinton that much. I think she should leave bill clinton at home in the course of this. One, we all know hes popular. The problem is he reinforces with the voters that she is part of the past. Even if you like that past, its part of the past. And voters always want the future. The other thing i think is this helps donald trump in the republican primary. It helps him because Hillary Clinton is despised by Republican Voters. And its a bankshot through bill to get to hillary. Thats why i think in the end, in the short term, this helps donald trump. So hes attacking bill clinton. Meanwhile, you see all these other republican candidates in this final four weeks until the Iowa Caucuses really starting to attack each other. Yeah, were in the time of the thing where its Musical Chairs but theres no teacher in the classroom to keep the rules. More chairs have been pulled out. Theres limited space to see who but now, we have green eggs and ham. We have fantasy football. And were at that time with limited chairs, and people are trying to dance around and get the last few chairs remaining before iowa and New Hampshire. The real grudge match, between ted cruz leading in iowa and marco rubio, another 44yearold cubanamerican senator. They seem to be fighting it out for that space right behind donald trump overall. Yeah, i mean, donald trump is still the dominant character in this race. But somebody needs to be second or somebody needs to be third in the course of this race. And you is have two brandnew senators going at it, as you say, in the course of this. And i think its only going to get more and more heated as we get closer to iowa and as we leave iowa into New Hampshire and the other states along the way. This is going to be a very heated race between the two of them. No question about that, matthew dowd, cecilia vega, thanks very much. Lets go to robin. Okay there, george. Now to president obamas big push to keep guns out of the hands of criminals. The president addressing the nation later this morning from the white house. Announcing actions he hopes will reduce gun violence all this without the help from congress. Correspondent Pierre Thomas is in washington with details. Pierre, what exactly is changing today . Reporter good morning, robin. With the stroke of a pen, the president is potentially greatly expanding the universe of people who should consider themselves as federal gun dealers and as a result require background checks on their gun sales. Were talking about hundreds if not thousands of people who are now selling firearms at gun shows or online. The white house is essentially saying if you routinely get income from gun sales, you should consider yourself a commercial dealer. Those who violate this mandate, selling guns with no background checks and without registering with the federal government, are subject to five years in jail and a 250,000 fine, robin. What would be the possible impact of this, pierre . Reporter well, theres some question as to whether there are enough federal agents to enforce the new guidelines. Proponents say this could mean many more background checks on gun purchases catching people who fell through the cracks. Opponents say it puts more burden on gun lovers who like to okay, pierre, thank you. Abc will have live coverage of president obamas announcement on gun control later this morning expected to be around 11 40. Around 11 40. Were going to move on now to that rough start to the new year on wall street, coming off the worst opening since the financial collapse of 2008. You see the numbers right there. The dow down almost 300 points. Our chief Business CorrespondentRebecca Jarvis is at the New York Stock Exchange this morning and, rebecca, worries about china sparked the selloff yesterday. What is the forecast today . Reporter good morning, george. And things seem to be leveling out here a bit this morning. The dow actually opening a bit higher in the green yesterday, after the rough bout yesterday. As you say, sparked by fears of china. At issue is china, as the worls second largest economy, slowing down. The question is, how much does that have a Ripple Effect here on things in the United States and on economies around the globe . And how dramatic could that Ripple Effect be . The second key is oil. Prices were clobbered last year. Continuing to be near record lows. Thats great new ifs youre a consumer filling up at the pump. Not if youre an Energy Company or someone with a job at an Energy Company. Theres an old saying here on wall street, as goes january, so goes the year. There are still 18 trading days left to prove that point, george. Plenty of time. Thank you, rebecca. Always optimistic. That standoff in oregon. Authorities and residents there are telling the armed militia men who seized federal land to leave. But they are not backing down. And abcs Neal Karlinsky spent time inside that wildlife refuge. Good morning, neal. Reporter robin, good morning. The group has now spent three frozen nights inside the compound which is just on a dirt road back there. Not exactly a glamorous place to hold a siege. So far despite calls for others to join their cause, their numbers have not been growing. This morning, for the first time, authorities are publicly ranchers here in rural oregon to pack up and get out. Its time for you to leave our community, go home to your families, and end this peacefully. Reporter the group which now calls itself citizens for constitutional freedom is holed up inside this federal wildlife sanctuary, land they seized while no one was here. This vans been coming and going a lot. Seems like some of their supplies. We were allowed inside to see where they sleep and prepare meals and found this man who posted this emotional goodbye to his family before joining up. My daughters, maddie and lilly, i love you so much. Your daddy swore an oath. He swore an oath to protect and defend the constitution. Reporter inside his views were the most sobering of anyone we met. Do you fear this could turn into something serious enough that you would not be able to return to your family . Theres always that chance. Ill tell you right now nobody here will fire that first shot. We will protect ourselves, but reporter the group says theyre fighting for nothing short of the liberation of thousands of miles of federal land, which they believe should be returned to americas ranchers. Their initial cause outrage over the conviction of fellow ranchers who turned themselves in to federal prison monday for setting fires on public land was just the beginning of a string of grievances. There are no police anywhere near here. So far sources indicated that because the area is so incredibly remote, authorities are in no hurry to do anything but watch and wait, george. They could be hunkered down for a long time. Neal, thanks very much. Well turn to the fight against isis and the hunt for this masked man from the terror groups latest execution video. Authorities trying to determine the identity of this new jihadi john. And abcs chief investigative correspondent brian ross here with the details. Good morning, brian. Reporter good morning, george. U. S. And british authorities today are closely studying this latest isis propaganda video identify the new English Speaking executioner who is now taking the place of the terrorist called jihadi john who was killed last year in a u. S. Drone strike. Behind the blacks mask the isis 2016 version of evil personified speaking with a british accent. And we will continue to wage jihad, break borders, and one day invade your land. Reporter since the release of this 10 1 2minute video which shows the execution of five supposed british spies, u. S. And british officials have been analyzing it in detail. Looking at the physical build, the eyes, and the speaking voice and accent of the new isis executioner who calls british Prime MinisterDavid Cameron an imbecile. Only an imbecile would dare to anger a people who love death the way that you love your life. Reporter among the possible suspects is this wellknown british radical, Siddartha Dhar who fled to syria and isis a year and a half ago. Reporter after he and his mentor, the radical london cleric angem choudary, were arrested by Scotland Yard on charges of supporting terrorism. The jihad is not a bad thing. Reporter dhar was interviewed by abc news correspondent lama hasan in 2014, as he urged young muslim men in london to push for sharia law. I think that will be the beginning of the end of the United States of america, of britain, of europe, and, you know, the entire world. Reporter a sidebyside comparison of dhar and the new isis executioner is far from conclusive. His family says its not sure its him. Some reporters who interviewed dhar say it is him. And others say it is not. One person in the video who has been identified by his family is this young, englishspeaking boy, who isis shamelessly uses to call for the killing of disbelievers. A london cab driver now told british reporters that that young boy is his grandson, the child of his daughter who went to syria to marry an isis fighter and has used the boy george . Boy, that is just terrific. Okay, brian, thanks very much. Lets get todays other top stories from tom llamas, youre in for amy this morning, starting with a nightmare for commuters in l. A. Thats right. Good morning, guys. We start with dramatic video from one of the busiest freeways in southern california. Interstate 5 was shut down during evening rush hour as police opened fire, shooting a suspect wanted for a string of violent crimes, including murder. He had driven the wrong way down the freeway and crashed into a car with a family inside. He was rushed to the hospital. Hes in Critical Condition right now. A former South CarolinaPolice Officer charged in a deadly shooting last april has been released from jail. Michael slager was seen on camera shooting walter scott you may remember this video who was unarmed at the time. Slager has been freed on 500,000 bond now under house arrest awaiting his murder trial. Overseas growing tensions between saudi arabia and iran are threatening to derail peace efforts in syria. The tensions stem from saudi cleric which outraged iranians. And led to sundays attack on the Saudi Embassy in tehran. The saudis have now cut all ties to iran stopping trade and grounding flights and today kuwait became the latest saudi ally to cut diplomatic ties with tehran as well. A big scare on the sidewalk for these people in turkey. Take a look. Suddenly an avalanche of snow comes crashing down from a roof sending pedestrians running to escape. Two women were buried but others rushed in to dig them out. Surprisingly, everyone is doing okay this morning. Finally a family in idaho woke up to a loud crash. They feared it was a burglar. Instead, it was this. A giant elk. The 600pound animal had fallen through a basement window into the kids playroom. The elk apparently a billiards lover, it took 2 1 2 hours to coax it out of the house. It finally scrambled up the stairs and ran outside to join its herd. Its so funny. The father of that family said he went downstairs terrified. Turns on the lights and sees that giant elk and took off put the kids in the bedroom and called 911. 600 pounds. 600 pounds, yeah. Did a number on that staircase, too. 8 ball in the Corner Pocket with the antler. Lets move on to bill cosby and that growing scandal. His wife now set to testify tomorrow in a lawsuit filed against the comedian. But she is fighting back taking Emergency Action to stop it. Abcs ryan smith is here with the very latest. Good morning, ryan. Reporter good morning to you, lara. Camille cosbys lawyers are on the offensive hoping one last effort will keep her out of her husbands fray. This morning, Camille Cosby fighting back. Filing this emergency motion to delay her deposition scheduled for tomorrow. Mrs. Cosby hoping to avoid court after a decision forcing her to testify in a defamation suit filed by seven women who accuse her husband of drugging and sexually assaulting them decades ago. In this emergency motion, mrs. Cosby, concerned shell be of her marital life, including her husbands sexual proclivities, attaching this email claiming the plaintiffs attorney threatened to get the u. S. Marshal to secure her attendance. Camille cosby has only made one Public Statement since dozens of womens have come forward with accusations, defending her husband of nearly 52 years calling bill cosby the man you thought you knew. A man now facing criminal charges. He is in good spirits and he has confidence in his legal teams ability to bring about justice for him in this case. Reporter just last week, days before the statute of limitations was set to expire, the embattled comedian was charged with drugging and sexually assaulting a former Temple University employee at his pennsylvania home in 2004. Cosby consistently denying the allegations against him and currently out on 1 million bail. If she loses the motion Camille Cosby may be out of options to avoid testifying at that deposition. As for the criminal case against bill cosby hes charged with aggravated indecent assault. 14th. If convicted he could face up to ten years in prison, guys. What do you think will happen with Camille Cosby . Reporter well, its interesting. I think if the judge sees merit to her argument, he will let her stop this while he decides it. And then day do the deposition later if he rules against her. It will be interesting. Ripe, thank you. Now to that deep freeze gripping the east this morning. It is chilly here and those storms are lashing the west coast. Rob has all that and snow is creating some driving problems too, right, rob. Yeah. Brutal cold stuff. Yesterday, we had streamers of lakeeffect, even oceaneffect snow across much of the northeast. As a matter of fact, heres one of those streamers and the impact it had across pittsburgh. Just an inch or two of snow caused multiple accidents. Because its so cold, cars going over that roadway and refreezing some of that melted snow. But right now, its minus 6 in boston. The wind chill. Its minus 3 in new york city. Flash flood watches out for california for one system, two systems and another one behind this so were looking at anywhere from 4 to maybe 8 there. And coming up on gma the mom of that affluenza teen expected in court this morning. As new details emerge about what her son was really doing in mexico. Inside the biggest blockbuster ever, amy taking us to the reallife place that helped bring some of your favorite other worlds Like Star Wars to life. Ome o