Will be right back. On the president ial campaign trail, it was standing room only in burlington, vermont for Donald Trumps latest campaign rally. He continues to hammer rival ted cruz for being born in canada. He said he should go before a qualified to be president. Major garrett was with the Cruz Campaign in iowa. Reporter ted cruz has argued nine cases before the united state supreme court, graduated with honors from Harvard Law School and was once a collegiate debate champion. None of that has prepared him for thbirther debate now raging with donald trump. Or for trumps unsolicited legal advice. I dont like the issue. I dont like bringing it up. Reporter against all evidence, donald trump claims an aversion to birtherism. Im doing this for the good of ted because i like him and he likes me. Reporter but for cruz, born in canada to an american mother, the issue is an unwelcome, possibly damaging distraction. Everybody tells me he had a joint passport. Reporter the real estate mogul offered cruz, a harvard trained lawyer, some legal advice. Go to the federal court to ask for a declaratory judgment. Reporter cruz denied having a canadian passport and as a legal matter it is moot. As a legal matter, its straightforward. John mccain was born in panama, but he was a natural born citizen because his parents were u. S. Citizens. Reporter but mccain, a frequent opponent of cruz in the senate, offered no help. Mccain faced similar questions in 2008 due to his birth on a u. S. Military base overseas. Thats different from being born on foreign soil. So i think there is a question. I am not a constitutional scholar on that, but i think its worth looking into. Reporter in new hampshire, jeb bush called the issue phony. This is donald trump trying to put everybody into his own reality tv show. Im not going to play it. Reporter and rand paul says one thing is for certain hes qualified and eligible to be the Prime Minister of canada. Reporter cruz is in the middle of a weeklong bus tour of iowa. Hoping to avoid the seeds of doubt trump is trying to plant. Cruzs strategy is simple, harvest votes whenever and at the math works this way here in the county, population of about 7,000. Four years ago, charlie, Rick Santorum carried this county with 101 votes. Back in washington, Vice President joe biden says he still thinks about what might have been. Biden decided not to run for president because his heart wasnt in it. Now he says i regret it every day. Julianna goldman has the story. Reporter the Vice President did a round of interviews to talk about president obamas executive actions on gun control, but just months after announcing he wouldnt challenge Hillary Clinton for democratic nomination, the Vice President made clear its still something he thinks about daily. I regret it every day, but it was the right decision for my family and me. Reporter in an interview with wvit, Vice President joe biden conceded he still is conflicted about his decision not to run for president. I plan on staying deeply weve got two good candidates. Theres a real robust debate between hillary and bernie. Reporter bidens remarks come nearly three months after announcing he would not run for president. I believe were out of time, the time necessary to mount a Winning Campaign for the nomination. Reporter the Vice President always said it was the grief over the death of his son, bo, from brain cancer that made the decision so difficult. I went out to denver and landed at a military base and met a whole group of militay families. And a guy in the back yells, major bo biden, served with him in iraq. All of a sudden, i lost it. How could you not . Reporter days after he announced he wouldnt seek the white house, he said how his son felt about him running. Some people have written that, you know, bo on his deathbed said dad, youve got to moment. Nothing like that ever, ever happened. As a matter of fact, it was the almost the opposite at that point. It was almost, dad, youve got to stay strong, because the family is going to look to you, dad. Winter has finally arrived on the east coast, and thats good news for ski resorts. The region still does not have much fresh powder. But at least its cold enough to make snow. Don dahler went for a couple of runs. Reporter these are the days i really hate my job. Shawnee mountain was covered with snow by thanksgiving the past two years. But now because of this heat wave weve been going through in december, theyve had a hard time getting people on the slopes until january. Now, though, it got cold and skiers are rejoicing. For this group of joyful skiers, you can mark january 6th as the best day of the year. Thats because snow has finally arrived on the poconos shawnee well, not real snow, but a machine made blend of water and compressed air thats now covering a third of the slopes thanks to frigid temperatures. Were anxious to get the season started. Its been a little tough go this year. Reporter jim tust is a managing partner and in his 35year career here there hasnt been a season quite like this. Tourism is the most important here. Reporter but from a cabin named hope, he looked toward the righter and colder future this winter and his machines could deliver. It has to feel good to look out and see these machines blowing snow. Its terrific. I live close by and i can hear them at night. I listen to that at home. I know just from experience when its really making good snow. Were optimistic. Three quarters of the season lies ahead, so were looking forward to a good january and february. Reporter but december disappointed just about every ski resort in the northeast trails is only 43 . Compare that to 99 thats skiable out west. This is footage of my family skiing in wyoming a few weeks ago, where the snow was over 11 feet deep. You can blame this boom or bust season on the el nino weather pattern, which kept temperatures high and dry in the east. This lateseason freeze hasnt only held up those eager to hit the slopes, bunearly every local business connected to the ski economy. Its not close to what it was last year. Reporter nicolette works at the starting gate action reports where sales have not only stalled but dropped 75 compared to a year ago. And for those resort employees as seasonal as the snow, its been no vacation. The past year, to open this reporter nicole fox is a Seasonal Employee who went more than a month without pay. What is it like for you when you havent gotten that phone call and january comes around . What its like for me, its just hard. Im not used to starting this late in the season. Its hard and theres bills to be paid. Thats the one that hurts the most, having to tell people, gee, we just dont have work yet. Reporter but in winters long awaited arrival, jim tust sees an opportunity for crowds looking to make up for lost time. Calling in sick to school. I hope thats okay. Take a snow day. Its all right with me. Reporter a lot of resorts are offering online incentives to convince people that even though it hasnt been snowing, it doesnt mean you cant come skiing. The cbs overnig your heart loves omega3s. And those in megared krill oil. Unlike fish oil, megared is easily absorbed by your body. Which makes your heart, well, megahappy. Happier still, megared is proven to increase omega3 levels in 30 days. Megared. The difference is easy to absorb. cell phone rings where are you . Well the squirrels are back in the attic. Mom . Your dad wont call an exterminator. Can i call you back, mom . He says its personal this time. If youre a mom, you call at the worst time. Its what you do. If you want to save fifteen percent or more on car insurance, you switch to geico. Its what you do. Where are you . Its very loud there. Are you taking a zumba class . [cough, cough] mike . Janet . Cough if you can hear me. Dont even think about it. I took mucinex dm for my phlegmy cough. He has that dry scratchy thing going on. Guess what . It works on his cough too. Cough guess what . It works on his cough too. What . Stop dont pull me spoiler alert she doesnt make it only mucinex dm relieves bothwet and dry coughs for 12 hours with two medicines in one pill. Start the relief. Ditch the misery. When you think of mens fashion, you probably think of suits, ties, a nice leather jacket. But as jamie wax reports, the Fastest Growing trend in mens wear is the festive sock. Very colorful. Reporter there is a revolution afoot. Wow these are great. Reporter a revolution deep in the sole of mens fashion. We just want to see your socks. A revolution in socks. Oh, wow socks are really easy fix to spice up your wardrobe. I really love the gown. Reporter brad goreski is pleased with the statement hes seen. Has it surprised even you that socks have become such a big thing . It has, actually. In terms of this trend specifically, its kind of like the gateway drug to mens fashion. Anything that gives guys the courage to want to be more daring in their fashion choices, thats a really cool thing. Reporter one man driving the sock revolution is the always dapper dwyane wade. You think about socks and the black socks with the gold toe. Thats all i used to have. Right. Wade, fadeaway. Reporter the 11time allstar has his own line of fashion socks that he helps design. This is an accessory for men that we can have a cool moment underneath our pants or on our feet that we feel a little extra when youre able to spend 14, 15 on socks different from a watch. Reporter wades socks are created for the California Based Company stance. So this is the house that socks built. Yes. Reporter which john wilson helped found after surveying the bland landscape below mens knees. The category itself was asleep. Reporter literally white space. White socks. White and black space. Reporter he filled that space with bold colors and patterns. They made mismatched pairs a marketing tool. They went for fun and quirky and introduced a line for those looking to step into a galaxy far, far away. And then there is basketball. On the court, where shoes have always been king, stance wants fans to see beyond or underneath the sneaker. It is literally a game reporter as of this season, stance is the official sock supplier to the nba. And though the details arent public, stance will have its logo on all the shins in basketball. How much has the nba deal represented to you as a company in terms of sales . Its been a huge contributor of growth, and its a good chunk of our overall revenue. Thats the kind of deal that you want. Reporter the sock market is a multibillion dollar business. More than 5. 5 billion worldwide. So entrepreneurs are dipping their toes in. I think not a lot of people wake up on a certain morning and say, im going to refresh my whole sock drawer. Reporter but etail company nice laundry hopes to refresh sock collections. They only sell socks in bundles. Designs range from the sut toll the loud. Dabble in them all. For us it never made sense to go buy socks one by one. You go through five or six pairs in a week, so we bundle them and sell them to customers. Reporter naturally, there are holdouts. Not everyone has gotten the wear your fancily socks memo. Which begs a question do you think this trend in mens socks is here to stay . I hope it is. I dont know. One thing about fashion is stays around for a long time. Author mitch albom has sold 35 million copies of his book. His latest work focuses on how we can touch others with our talents once we discover what those talents are. Jim axelrod has the story. Reporter before tuesdays with mory became one of the best selling memoirs of all time and the five people you meet in in 35 different languages, mitch alboms dreams had nothing to do with writing. I was a musician when i began and i always quamt wanted to be a musician. I always thought thats where my talent lay. I never wrote anything. Reporter the piano player moved to new york, booked any joint he could, while he knocked on record companys doors and got them all slammed in his face. Was it painful when it didnt happen . Yeah, it was the first time in my life that all the lights hadnt turned green. Reporter failure became fuel. In large part your trajectory was set my failure. Yeah. The effort that i put in to achieve what ive been able to do in the world of writing is the direct result of my failure. It took a long time before music wasnt a wound for me. Time has healed that. And i can take joy in music again. Reporter the result is his latest book, the magic strings i created this character that is so pure in his musical talent that his guitar string turns blue when he changes someones life. And he gets six chances in life to change six lives. Everyone joins a band in life. Only some of them play music. Thats the truth. We all affect one another. Reporter its as much a project as a book. For a companion cd, albom gets reallife musicians to offer their takes on frankies fictional songs. Every time he hit a note his heart was breaking. Frankie had a hit song career. He had a number of hits that i invented. I came up with the name and lyrics. These artists took the name, the lyrics, and the year the song was supposed to have come out and made a song. Essentially they remade songs that never existed. Day reporter among those playing on the cd, the author and his wife. Finally, albom has an album. You can die happy. Yeah. I was already going to die happy, but i can die happier and with a soundtrack now. Thats the overnight news for this friday. Investors head for the exits and stock prices plummet. What has wall street rattled . Also tonight, a massive gas leak in Southern California. We call this the bp oil spill on land. Lining up for painkillers. A landmark suit against drug distributors that allegedly got them hooked. Keep america healthy. What Government Research says you should and should not eat. If you cant pronounce it, dont eat it. And saturday night fever. Millions of americans chase the biggest Powerball Jackpot in history. Why do i play . Because i want money. This is the cbs overnight news. Retirement accounts are taking a beating this week. For the third time, the dow suffered a tripledigit loss. 392 points this time, or 2. 3 . Investors are worried that the chinese economy, second largest in the world, is slowing more than the Chinese Government is letting on, and that the governments haphazard attempts to intervene in its markets and devalue its currency are giving the impression that it doesnt know how to manage the trouble. Our Senior National correspondent Anthony Mason is following all of this. Reporter scott, it was a painful day to check your 401 k . The dow is down more than 900 points since monday, thats more than five percent. The catalyst for the selloff once again was china. The Chinese Market shut down after less than half an hour this morning after plunging 7 . It was the second shutdown this week. Investors are worried the chinese economy is slowing. Gdp growth, which hit 12 five years ago, is now below 7 . If chinas in trouble, that could mean trouble for the rest of the world. And with this chaos in the shanghai markets, there are worries the chinese dont have handle on their own economy right now, scott. And anthony, the chinese are also the second Largest Consumer of crude oil in the world. And youve been looking into the impact of that. Reporter yeah. Crude, scott, hit a 12year low today. 33 a barrel. The price has fallen by nearly half just since may, when it was 60. If you drive to work, its like a huge tax break, but its pretty painful if you work in theres just too much supply now. And if china continues to slow, there will be less demand and gas prices could stay low for a while, scott. Anthony mason, thank you very much, anthony. The folks at dow jones told us today that the plunge this week in the 30 blue chip stocks alone represents a market value loss of nearly 260 billion. Well ted cruz is watching his stock rise, in iowa. Major garrett took a ride with the republican frontrunner 25 days before iowans cast the first votes of campaign 2016. Reporter we rode with ted cruz on day four of a sixday bus tour of iowa and asked about his birth in canada, and Donald Trumps legal advice. This issue is a nonissue. The law is quite clear that the child of a u. S. Citizen born abroad is a naturalborn citizen. Reporter you perceive this as an attack. Donald trump says hes trying to help you. Politics, its fairly unusual for your opponents, who are running for the same position, to be actually trying to help you. I will hear their prayer and forgive their sins, and i will heal their land. Reporter cruz has climbed to the top of the iowa polls by reaching out to evangelicals and social conservatives. In 2012, 57 of republican caucusgoers describe thselves as evangelicals. 47 said they were very nservative. But cruz says his strategy does not rely just on iowa or new hampshire, whose more moderate electorate has not been as welcoming. There are a lot of candidates in this race who have to win iowa. There are a lot of other candidates who have to win new hampshire. From our perspective, we dont view any one state as a must win. Were going to compete hard and try to win everywhere. Reporter cruz has taken a harder line on immigration than trump, opposing trumps willingness to allow deported does the fact you enter illegally permanently bar you from ever entering the country legally . I dont believe that anyone who has come here illegally should be eligible for citizenship. Reporter cruz faced the reality of that policy yesterday in storm lake when he met a woman protected from deportation by Obama Administration executive actions. Cruz told the woman, under a cruz presidency, she would have to leave and he told her, scott, breaking the law creates human tragedies. Major garrett in iowa for us tonight. Major, thank you. 17 miners who were trapped for ten hours in a salt mine in lansing, new york, were rescued today. They had gotten stuck in an elevator 900 feet underground. They were lifted out by a crane just a few at a time. Nobody hurt, but they were cold. The shaft was 20 degrees. Today, there was a scare in paris on the anniversary of the terrorist attack on charlie Mark Phillips is there. Reporter this time the only body lying on the streets of paris belonged to the attacker. He had approached a Police Station carr