After the New York Times revealed key facts from former national security adviser John Bolton’s upcoming book, Adam Schiff said that it was clear the information Bolton has is why Trump blocked him from testifying. “I think you have to for the sake of the office,” Trump told Fox News’s Laura Ingraham when she asked if he would block Bolton. Schiff tweeted Sunday that it’s clear what Bolton knows is something Trump wants to hide from Americans. “The President blocked our request for Bolton’s testimony. Now we see why,” said Schiff. “Bolton directly contradicts the heart of the President’s defense. If the trial is to be fair, Senators must insist that Mr. Bolton be called as a witness, and provide his notes and other documents.”