Jared Cohen on America's "Accidental Presidents"

Jared Cohen is best known as a former advisor to Condoleezza Rice and Hillary Clinton, and as the founder and CEO of Google’s thinktank Jig Saw, but his latest venture has taken some by surprise: a book on American political history. “Accidental Presidents” examines the eight men who have ascended to the highest office in the land without being elected after their predecessors died in office.