did this play into this. what went on behind trump's decision to fire acting director sally yates and what were discussions like when the president decided he wanted to fire james comey, the fbi director? >> yates, comey, flynn. anything else they want to know? >> steve bannon offers sort of a wealth for mueller's team. >> he does. >> he was there during the campaign, during the transition and he went on to the white house. we're also expecting him to get questioned about whether the president tried to exert any pressure on jeff sessions when it came to the russia probe. tracing back, they could also ask about, look, we know you weren't there during this don junior meeting with the russians in trump tower in june of 2016, but what have you heard about it? what has the president said outit? what were the discussions like about it when you weren the white house? that's one of the key things about when these witnesses are going in to interview with mueller. it doesn't necessarily have to