impeachment constitutionally invalid and second of all how does a white house straight up say we're not cooperating? >> i don't think they can do either. for the last two weeks, i haven't been doing too much tv t i've been trying to study the history of the three presidential impeachment proceedings and compare it to all the evidence in ukraine that's come out the last few weeks. my ultimate conclusion -- this will be part of a larger writing project, is that i think that the president is going to be impeached. i don't think that he has any valid arguments to the contrary and it's very, very serious. of course, it started with the transcript that the president himself released july 25th. when he attacks the whistle-blower, i think schiff is absolutely right. the whistle-blower is not necessary at all. he started the chain of events, or she started the chain of events. now we have the transcript itself. and then every day brings new evidence that's all damaging to