heads down to alabama. what do we know about the truth here, matt, or do we? >> well, we don't. if what the president says in his tweet is true, that he and michael cohen discussed a pardon according to his version of it, cohen asked him about it and he said no, that would be signatsi news. we haven't seen disclosure of that and now that the president puts it on the table, i think congress has the responsibility to follow up and say what was the subject of that conversation, what did cohen say and what did the president say. because the president's publicly talking about these pardons all the time has had a poe looting effect on the entire investigation because just bringing it up puts it into all these witnesses' minds at the time when they trying to make this decision do i cooperate with the government or do i not. and if they know there is a chance of the pardon, either because neff seen the president's public remarks or their attorneys have had back channel conversations and we know cohen's attorneys were with rudy giuliani, it maybe makes them less likely to cooperate