Exactly. The Courts allowed Congress that right. That's what I said. But they can strip that power away from them tomorrow ( as you clearly demonstrated they have the power to do with your citations). It still doesn't change the fact that if you don't show up to testify you go through normal due process and present the case for why you shouldn't have to testify. And the reality is, the US Congress is afraid to pursue that option so you almost never see it happen. And they are afraid because it gives the courts the opportunity to overturn their authority. So if you decide not to show you are going to get away with it. The illusion is that you must testify or go to jail, but it simply isn't true.