The Last Word with Lawrence O'Donnell 03/17/17

NBC source: DOJ has no evidence to support Trump wiretap claim

At an awkward press conference with German Chancellor Angela Merkel, Donald Trump stuck to his claim that Pres. Obama wiretapped him – as new Department of Justice documents show there's no evidence. Jonathan Finer, Evan Siegfried, and David Corn join Ari Melber. ... more Duration: {{video.duration.momentjs}}