mcgahn, the president tut put i. he is driving trump's successful efforts to fill the courts with conservative judges. >> that, includes, okay, supreme court nominee brett kavanaugh mcgahn escorted to capitol hill today. though reporters were interested in a different topic. >> why did you take so long to the special counsel, mr. mcgahn. >> were you afraid the president would betray you? >> do you regret that decision? >> will you continue to comploo i? >> have you briefed the white house on everything you told the special counsel? >> mcgahn has been involved in most of the key events in mueller's obstruction probe as far as we know, including michael flynn's early ouster of the white house and getting jeff sessions to recuse himself the firing of james comey. it was mcgahn you will recall according to "time's" who