President Trump's executive order banning refugees from predominantly Muslim countries has once again brought up the vetting process of those trying to enter the United States. A look back at this process from a piece first aired in October of 2016. Earlier this month, an earthquake triggered an avalanche in Italy -- 11 people miraculously survived -- 29 did not. Steve Kroft has their stories. First doping, now motorized bicycles. Bill Whitaker looks into another possible scandal for the world of pro cycling.
