The Last Word with Lawrence O'Donnell 06/09/16

Sen. Warren: I'm ready to be Cmdr-in-Chief

On the same day she called Trump a "thin-skinned, racist bully," Sen. Elizabeth Warren endorsed Hillary Clinton on The Rachel Maddow Show. Maddow and NY Times columnist Nick Kristof join Lawrence O'Donnell to discuss that and her vice presidential via ... more Duration: {{video.duration.momentjs}}