>> reporter: mueller coming before congress is, obviously, the next first step. this is why washington has been in a holding pattern. nadler saying he wants to do it in a private setting is a game for changer. for democrats this is all about getting the information before the american people. they already know that they think what they have in this report is tantamount to impeachable offenses. they need to bring the public a that's that's a tension because now it looks like this will all take place behind closed doors. >> the question is how far will bob mueller actually go in his i testimony? i remember talking to glen keshner a couple of weeks ago. he said he believes bob mueller will say the president obstructed justice, considering the ten incidents in which he laid out in his report. do you think that will be the