official, his statements that he knew something about this or was there -- is -- does it not o not exist. that's something they have to figure out. we're at that stage in the investigation. it's almost two years since the fbi began looking at links between trump campaign and russia. and they're still going down different alleys to try and figure out whether there's a there there. >> ken, on this trump tower meeting we keep going back to the scene of the crime perhaps, with the interviews, the senate committee investigation and interrogation of donald trump jr. the fact he's denied he talked to his father about it, denied he had a phone conversation, any phone conversation. the whole thing looks like a cover-up now. all the way beginning with the father rewriting history of what that meeting was about. they are very concerned what that meeting was about and whether that showed collusion i believe. what do you see? >> i'll tell you what comes through that i learned, this