practice doing a fact-finding information is to keep the information closed. the reason is exactly what i described earlier with ambassador sondland, first of all, the day before his deposition he spoke with secretary perry about his testimony. that is the type of tailoring that can happen when people are engaged in misconduct and they try to line up their stories. if you keep the information closed they can't line up their stories. i think frankly part of the reason why ambassador volker and sondland's public hearing testimony was so different from their deposition testimony because the initial depositions were in closed session before we then released all the transcripts to the public. >> this is unprecedented because in the nixon and clinton impeachment hearings there were not closed depositions before the hearings. >> yes. it was passed by republican