was arranging this meeting and his reaction to how much he loved the idea of getting some information about hillary clinton from russians. >> that's right. they'll go through that. they'll go through how this relationship developed between him and this child of a russian oligarch which helped the trumps set up this miss pageant. how many russian oligarchs does he know and has he worked with? have they been investing in trump tower? are they trying to do so now? there's potential there's ongoing efforts to influence the trump family financially. so there are many, many questions that they need to get through, some of which are financial. >> mieke, let me just ask you quickly since you've been involved in these kinds of discussions. if there's a question that donald trump jr. doesn't want to answer, does he need to ip vnvo the fifth amendment since this is a less than official committee proceeding, or can he just decline to answer?