>> in investigations, anderson, investigators would like to keep the information as a close hold. you don't want the witnesses to tailor their testimony to one another. you don't want them to cook up alibis. you want to get the unvarnished truth. we do have direct evidence that two relevant witnesses talked to each other before a witness testified. we'll be voting this week to allow our deposition transcripts to become public, and that will be seen very soon by the public. >> and are there any witnesses you believe have not been forthcoming who you want to have called back? >> we have a number of witnesses who have told one version of events about this, quote, irregular channel as ambassador taylor described, of president trump, rudy giuliani, and ambassador sondland trying to shake down the ukrainians. of course that's in contrast with what ambassador sondland said, but i'm going to reserve judgment on the truthfulness of all witnesses until we get to the end of this investigation. >> congressman swalwell, i appreciate your time. thank you very much. up next, more to talk about