documents related to russia and otherwise. defense attorney and former federal prosecutor dealt with many questions involving the fbi and federal prosecutors. it was for the president who once said that would be a red line in his estimation. but what robert mueller does, i guess, is up to him. >> yeah, it's going to be harder and harder for president trump to argue against this when the fbi is coming up with regard to issues that have led to sanctions. they are coming up with indictments. there is productivity and fruit coming from the mueller investigation. so what are you going to do now when he says i need these documents? you know, sometimes, shep, as prosecutors, sometimes we get them so that we can pass the straight face test when we say somebody is innocent of something. really looking into some nefarious connections here between someone in the trump organization and all these date that points going on with russia. >> shepard: when you look at the big picture here is, there something that you can point to as a suggestion for why it is that mueller might want these documents at this time? >> i think that they actually waited longer than they typically do. that's strategic and tactical reason.