they say they are clearly just trying to get to the facts. lauren what happened last year, and said that look, we just to want get to the bottom of exactly what happened. and mccabe coming today will be the first witness as part of this new investigation by these two committees. here's what mark meadows told me earlier today. >> there's not a concern in terms of trying to discredit the special prosecutor that has been not only established, but continues to investigate, and so, robert mueller is not a subject of our investigation. >> how would you react if the president took steps to get rid of robert mueller. >> he's not. i talked to the president, he's not. >> reporter: and now when i asked the house chairman bob goodlet about the criticisms focussing on the mueller, the clinton e-mail issue, he said look, this is something we announced a couple months ago. this is the investigation we're going to do looking into fbi interference, possible fbi bias and that's why we're looking into this right now. he said it's the first of several witnesses they want to