appointed. we know him to be the ideal choice for this job. i believe it s going to lead right to impeachment. i hope s not so crazy that he ll try to fire mueller. reporter: couple things to add, rod rosenstein the man who made that appointment of robert mueller is due on the hill today. promise to the full senate to brief them behind closed doors about the tick-tock details behind the jim comey firing that happens later this afternoon. also remember, there are no fewer than four committees undergoing their own investigation with ongoing investigations. most of them i think all of them at this point have asked for documents or jim comey himself to come and testify. question now whether robert mueller and his assistants are going to want that to go forward considering their investigation now starting just 16 hours ago. hallie? reporter: mike, another busy day for you over on the hill. thank you for joining us here. pete williams, nobody knows the justice department better. pete,