The Last Word with Lawrence O'Donnell 06/07/12

Romney supports better mouse traps

Mitt Romney defends free enterprise and the mouse trap industry while President Obama hits Vegas to talk student loans. MSNBC's Krystal Ball and Ari Melber join MSNBC's Lawrence O'Donnell to discuss the tightening race for the White House. ... more Duration: {{video.duration.momentjs}}