Boehner says Republican colleague held 10-inch knife to his throat outside House floor

John Boehner, former Republican House Speaker, reflects on his tenure in office in his new book, "On the House: A Washington Memoir." CNN's <a href="http://www.cnn.com/profiles/brian-todd-profile" target="_blank">Brian Todd</a> breaks down some key stories from the book, including the time Alaska Rep. Don Young held a knife to his throat.