The Last Word with Lawrence O'Donnell 09/01/15

Will Christie go 'nuclear' at next GOP debate?

Chris Christie tells Jimmy Fallon he'll 'go nuclear' in the next Republican presidential debate if he isn't asked enough questions. Plus, new debate rules could send Carly Fiorina to the main stage for the next GOP presidential debate. The panel discusses. ... more Duration: {{video.duration.momentjs}}