Guests: Rick Hasen, Danya Perry, Harry Litman, Catherine Christian, Ryan Reilly, Rep. Jamie RaskinTonight, on All In – The key witness in the case against Trump goes public. Hours before his third arrest and arraignment, the easy answer for the ex-President's defense. Then, why the randomly assigned judge is bad news for the defendant. The complicated calendar of a Republican frontrunner facing three criminal trials. And Congressman Jamie Raskin on Jack Smith's decision to charge a civil rights law used to prosecute KKK violence.