Pa. Lt. Gov. John Fetterman looms tall – in person and in politics

John Fetterman, the 6'8" lieutenant-governor of Pennsylvania, is a blunt-talking, self-described progressive intent on breaking through with swing voters, many of whom backed Donald Trump. Contributor Mark Whitaker talks with Fetterman about his efforts to revitalize Pennsylvania's Rust Belt; his outspoken defense against election-related conspiracy theories; and his unabashed Twitter feed that mixes mockery with cold, hard facts.