>> do you think it's significant? any way that donald trump's lawyers are saying the president himself cannot obstruct justice because the president is the one in charge of all investigations? >> they certainly have been moving the goalpost. i'm not sure that lawyers who are unbiased and able to take a step back would subscribe to that theory. we have heard from legal minds that if there was corrupt intent in the president's firing of dismissal of jim comey, for example, that would, in fact, be pertinent to any kind of obstruction of justice case and the president's constitutional role as commander in chief and head of our justice department and law enforcement community wouldn't have a standing in that instance. look, i think the fact remains that we have heard varying defenses from the president's attorneys. first, that the president wasn't aware. now that the president may have been aware, they still haven't clarified that. in any ways, it doesn't wrael matter. i think those legal minds have taken a look at this, have