The Last Word with Lawrence O'Donnell 03/21/16

Trump & GOP clash over delegate process

Even as Donald Trump met with key GOP figures in Washington, he still clashed with other party members over the RNC's delegate rules, as they may prevent him from being the undisputed nominee. Lawrence discusses with Curly Haugland, Katie Packer, & Jonathan Alter. ... more Duration: {{video.duration.momentjs}}