Shiffrin makes history as most successful World Cup skier

American skier Mikaela Shiffrin is making history as she now holds more World Cup wins than any female alpine skier. Shiffrin was a teenage prodigy when she burst on the scene more than a decade ago, now she's a two-time Olympic gold medalist and six-time world champion. Christine Brennan of USA Today joined William Brangham to look at Shiffrin's career and impact.