Tonight on The Last Word: A GOP-led committee holds a hearing on the FBI. Also, some Senate Democrats urge President Biden to invoke the 14th Amendment to raise the debt ceiling. Plus, a new book exposes the Supreme Court's growing reliance on the "unexplained" shadow docket rulings. And Trump's legal peril grows as the classified documents investigation progresses. Del. Stacey Plaskett, Sen. Ed Markey, Steve Vladeck and Harry Litman join Lawrence O'Donnell.