The Last Word with Lawrence O'Donnell 05/05/16

Trump's 'amateur' response to Speaker Ryan

After Paul Ryan said he wasn't 'ready' to support Trump, the candidate said he wasn't ready to support Ryan's agenda. MSNBC's Lawrence O'Donnell argues this is evidence Trump has an 'amateur' campaign staff. David Frum, Stuart Stevens, & Jonathan Alter discuss. ... more Duration: {{video.duration.momentjs}}