Tonight on The Last Word: In a new filing, Jack Smith calls out Trump's lawyers in the classified documents case. Also, the Supreme Court plans to hear the Trump ballot case arguments on Thursday. Plus, President Biden wins the South Carolina Democratic primary with 96% of votes. And Joy Reid discusses her new book, "Medgar & Myrlie: Medgar Evers and the Love Story That Awakened America." Andrew Weissmann, Bradley Moss, Neal Katyal, and Simon Rosenberg also join Lawrence O'Donnell.

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.