Tonight on The Last Word: The New York Times reports a former Trump finance chief is negotiating a perjury plea. Also, Donald Trump urges Republicans to kill the bipartisan Senate border bill. Plus, the House passes a bipartisan tax bill that expands the child tax credit. And Defense Secretary Lloyd Austin apologizes for the handling of the news of his cancer treatment. Andrew Weissmann, Stuart Stevens, and Sen. Sherrod Brown join Lawrence O'Donnell.

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.