The Last Word with Lawrence O'Donnell 12/21/17

White House finally admits Trump will benefit from tax bill

President Donald Trump insisted for months that he wouldn't benefit from the tax bill, but his press secretary has finally admitted he will. Jason Johnson predicts a 2018 "boondoggle" for the GOP after the tax bill. He joins Joy Reid with David Cay Johnston. ... more Duration: {{video.duration.momentjs}}