are learning what happened as the trump administration tries to deflect blame. you're in "the situation room". wolf blitzer is off. i'm brianna keeler. this is "cnn breaking news." breaking news tonight, president trump filling a big hole in his white house staff after days of frustration. he announced in a tweet a short while ago he is tapping budget director mick mulvaney to be his acting chief of staff, replacing john kelly. also breaking, the special counsel is refusing to let michael flynn suggest fbi agents were in any way responsible for his lies, lies the former national security adviser has admitted to in court. mueller's team refuting flynn's claims in his sentencing memo and indirectly rebuking president trump who tried to down play flynn's admitted crime. this as michael cohen says mr. trump is lying to this day,