reporting from the press, that the prime minister of australia was also engaged in the president's efforts to use his position of public trust to dig up dirt on his political enemies. i think the american people now know beyond a shadow of a doubt that the president has committed crimes, that he must be held accountable, and that if our democracy is to make it, there must be justice at the end of the day. >> there is a tentative agreement for the whistle-blower to testify, but the president is threatening the whistle-blower and today said that he is trying to find out who that person is. what do you think of his tactics of this impeachment inquiry? >> donald trump is a thug. he's acting like a mob boss right now. he's had a history of witness tampering and intimidation. he's trying to do the same thing right now with the whistle-blower, demanding that his identity be revealed so that he can intimidate him and, frankly, so that he can intimidate other potential