might be taping them, that this is sort of in keeping with something that he liked to do. doug? >> well, it's possible, but then he's got to cough up the evidence now. some people are using the word constitutional crisis, at least a crisis in confidence in the presidency. this is a big one. this is a big -- trrp trdonald couple of tweets will cost him, one when he said barack obama wiretapped him, that was proven false and now we've got to see whether this is real or not, but that wasn't just a casual aside by donald trump. he has washington on fire over that particular tweet, because if there is a tape, he now needs to turn it over as evidence. i'm going to, i think where there is or isn't one you'll find a white house trying to claim now there really wasn't a transcript or a recording that they can share. >> samuel and douglas, thank you very much for all of the legal and historical context here. we're following a lot of news this morning including a