Is Romney's promise to reduce the unemployment rate to 6% realistic? Christine Romans explains

In an interview with Time magazine yesterday, Mitt Romney pledged to get the unemployment rate down to 6% after his first term  if he's elected.

Acknowledging that the Congressional Budget Office has already predicted that unemployment will be down to 5.3% by the end of 2017 regardless of who's in office, Christine Romans says that Romney's goal is doable on Early Start today.