manager i'm curious because this committee has subpoena power. so how are you going to enforce subpoenas, especially if we're going to hear from folks like don jr., ivanka, perhaps the former president himself, how are we going to ensure they show up and testify before the committee. i know you're not on the committee but being a former impeachment manager i'm sure you have opinions. >> the congress does have extraordinary subpoena power, and i would be surprised ultimately in the chairman, betty thompson and the committee decide to subpoena somebody that they don't show up at all. i think part of the reason that you saw that happen during the trump administration is because those witnesses who were being subpoenaed felt as though they would be backed up by the white house and the trump administration, and they could buy time and hopefully for them by then the proceeding would be done, but i think it will be a very different story this time,