again in an overheard call with his e.u. ambassador. president trump asked sondland, so he s going to do the investigation? reporter: those three days, schiff argued, showed the president himself was behind the scheme, using millions in military aid as bait. ly it was not only immoral. it was also illegal. reporter: the president s edgal team looked on from a table nearby. we will challenge aggressively the case that they re putting forward. > reporter: in a series of late-night votes, senate republicans blocked the minority s attempts to secure new witness testimony. i move to table the amendment. table the amendment. table the amendment. reporter: some republicans say they re open to witnesses if biden testifies, too. democrat chuck schumer: that trade is not on the table. do o donnell: nancy cordes joins us now and, nancy, on this idea of a witness swap idea, i know democrats are saying this isn t like some fantasy football trade. and i understand joe biden