president having a personal interest at stake. so, this is part of the regular discovery process. again, this is written right into our constitution. the president had an opportunity to essentially divest himself of his ownership interests. he chose not to. and now it's perfectly appropriate for congress to determine whether there is a constitutional violation. >> yeah, it's the emoluments clause, article i, section ix, clause viii says that no president should accept any emolument, present of any kind from any king, prince or foreign state. that's what you're referring to. let's turn to the latest fight, senator, between president trump and former vice president joe biden. it all started with the president embracing kim jong-un as the north korean dictator taunted biden now biden says the president is behaving underneath the dignity of the office. that's what biden's campaign is saying. what do you make of that?