Ralph Nader on Bernie Sanders

As independent Senator Bernie Sanders of Vermont announces his bid for the Democratic presidential nomination, we speak to former presidential candidate Ralph Nader. “We don’t want a coronation of Hillary Clinton,” Nader says of Sanders’ run. We also talk about his new book, “Return to Sender: Unanswered Letters to the President, 2001-2015.” The book is dedicated in part to the workers of the U.S. Postal Service.