Lawrence: Republicans attacking Anthony Fauci is 'one of the darkest days in our Senate's history'

Tonight on The Last Word: The Senate Judiciary Committee postpones Todd Blanche’s confirmation vote. Also, James Talarico challenges Ken Paxton to three debates in the Texas Senate race. And Elon Musk is confronted over the death toll after USAID ended. Andrew Weissmann, Texas State Rep. James Talarico, and Dr. Atul Gawande join Lawrence O’Donnell.