Sen. Tim Kaine; Paul Rudd; 'The Stanford Prison Experiment'

Senator Tim Kaine explains the congressional process for the 60-day review of the Iran nuclear deal. Paul Rudd talks about his new film, "Ant Man." Dr. Philip Zimbardo, actor Billy Crudup, and director Kyle Patrick Alvarez discuss Dr. Zimbardo's infamous Stanford Prison Experiment—the subject of a new film by the same name.