republicans today repeatedly aired their grievances over the process of the impeachment hearings. one of their top complaints, the unknown identity of the whistle-blower, whose complaint sparked the democratic impeachment inquiry. of course identity protected by law. here's congressman jim jordan and the democratic rebuttal from congressman peter welch. >> no matter what they do, no matter how many witnesses they bring in here, four facts will not change, have not changed, will never change. the call shows no linkage between dollars and the investigation into burisma or the bidens. president trump and president zelensky have both said on the call there was no linkage. there was no pressure. there was no pushing. ukrainians didn't even know the aid was withheld at the time of the phone call, and most importantly, as has been pointed out, the ukrainians didn't take any specific action relative to investigations to get the money released. now, there is one witness, one