Tonight on The Last Word: Donald Trump lies about presidential immunity after his court loss. Also, a new amicus brief on Trump's ballot disqualification calls for the Supreme Court to use a "50-state solution." Plus, Republicans block a bipartisan border bill after Trump criticizes the deal. And Democrats probe potential ethics and tax violations by Justice Clarence Thomas. Barbara McQuade, Glenn Kirschner, Akhil Amar, Sen. Jon Tester, and Sen. Sheldon Whitehouse join Lawrence O'Donnell.