Tonight on The Last Word: Donald Trump sues the Wall Street Journal over the story on the alleged letter sent to Jeffrey Epstein bearing Trump’s name. Also, Oregon Senator Ron Wyden is investigating Epstein’s financial network. And the White House dodges one reporter’s question after Trump tells an imagined story about his uncle and the Unabomber. Mimi Rocah, Tim O’Brien, Matthew Goldstein, and Andrew Feinberg join Lawrence O’Donnell.