barbara, bill clinton was a lawyer. he was one of the sharpest talkers around and he got himself into a pickle in that testimony. donald trump has a history of giving false statements in testimony. he's done it before, has a history of giving statemefalse when there's no testimony involved. >> they're going to do the best they can to negotiate the terms. their ideal scenario would probably be no questions at all. short of that, written questions where they can assist him in preparing the answers. he's got lots of time to think what he's saying and not on the spot. i do want to point out what the robert mueller would be doing if he's in a grand jury set org interview setting is not trying to trip him up and catch him making slips of the tongue. to commit perjury one has to make a materially false statement. if he should lie about something significant, that could be a basis for perjury or obstruction of justice.