they realized they need to interview a gentleman name dalberg, kenneth dalberg who lives in minnesota and a man from mexico city. at that point and here again, we go back to the person who oversaw the fbi investigation. the fbi officers are not allowed to do these interviews. >> i was told by concord the leads were put on hold. i asked him why. he said, well, headquarters said we're holding off on that until we hear back from the agency. >> then you can hear the president ordering. he just ordered his advisers -- >> that the way to handle this now is for them to have -- just say stay the hell out of this. this is a -- this is -- we don't want you -- that's not unusual. >> the president didn't ascent to that recommendation. that's an obstruction of justice. let's fast forward. that happened in june of 1972. well, the supreme court decides in july of 1974 that there are limits to executive privilege. the president turns over some transcripts which include a transcript of that conversation. well, let's hear what trent lott, who had voted with the president on the house judiciary committe