Rubio changes his tune on Trump04:55
Chris Hayes talks to Philip Klein about Marco Rubio's very public about-face on Donald Trump.
Sen. Sherrod Brown announces 'Dignity of Work' tour06:34
Warner: 'More than a little bizarre' if Trump took interpreter's notes04:44
John Brennan agrees: Trump is clear and present danger to U.S.09:54
Clinton adviser reacts to latest Trump Russia revelations04:50
Hayes: Steve King's agenda has taken over the GOP02:33
Clint Watts: The FBI had to act on Trump05:55