Lawrence: Caving to Trump, Tillis & Cornyn prove once a senator, always a senator

Tonight on The Last Word: A Todd Blanche order keeps Donald Trump’s audit immunity deal intact. Also, Trump repeats his vandalism claim despite the Justice Department’s conclusion about the Reflecting Pool. Plus, the Pentagon is reportedly seeking “creative” tips on the Iran war strategy. And a recent poll finds voters prefer Democrats over Republicans on the economy. Sen. Sheldon Whitehouse, John Kirby, and Dr. Amy Acton join Lawrence O’Donnell.