that is a black box, mueller's investigation. a consistent theme is that this administration changes its opinion of close advisers very quickly. let's just remind people what trump and his advisers, closest advisers saying about michael cohen a short time ago and then what they were saying last night. have a listen. >> if he believes it's in his best interest to cooperate, god bless him. i think he'll tell the truth as best he can given his recollection. and if he does that, we're home free. the man is a liar. a proven liar. there's no way you're going to bring down the president of the united states on the testimony uncorroborated of a proven liar. i guarantee you this guy is a proven liar. >> so he's a proven liar. two months ago i think he's going to tell the truth. i do not expect him to lie. he's honorable. is that a lawyer you can trust, jeffrey toobin? >> well -- it's kind of a problem, isn't it?