Vanity Fair Special Correspondent William D. Cohan joins us to discuss his latest piece for the magazine "The Untold Story of How Gary Cohn Fell For Donald Trump." The story explores how several former Goldman Sachs executives now surround the president, including Gary Cohn, the head of the National Economic Council, Steve Mnuchin, the Treasury Secretary, Dina Powell, a deputy national-security adviser and Steve Bannon, Trump's chief strategist who was a Goldman Sachs executive in the late 1980s.