process to hold up the military aid to ukraine or demand the sort of quid pro quo that's alleged, that's how leaders came up with witnesses, they could clear president trump if president trump could allow them to testify. if you're going to have a fair trial. we've got all the evidence and witnesses that were developed by the house intelligence committee through their inquiry. what we don't have is the folks the president has blocked. if the president has a defense, this would be the moment to present them, what did the president know. >> senator john cornyn is making the case, obviously a member of gop leadership, look, if this is what you wanted you should have had the house democrats get the testimony so it was part of the record, and i'm referring obviously to mick mulvaney, john bolton, anybody else that senate democrats are now asking to hear