however, they could also break it up into work streams. so they may come to a conclusion or the point that they are ready to interview the president with respect to the conspiracy to interfere with the election or the obstruction of justice. and they may say to the president, we want to do a discrete interview with you on that topic and reserve the right to come back and talk to you about other top iks, or they could do it in sort of one fell swoop for all topics. so if he were interviewed tomorrow, it wouldn't tell us that the investigation is in its last leg because we don't know what the subject of that inquiry could be. >> wouldn't it be hard to get him to come back multiple times wouldn't it be easier to do it all at once? >> sure, it would be. and again, it would be de deferential to the office of the president to do it at one point in time but it's not required. remember, ken starr interviewed