And what's with this new idea of not answering questions when under oath before a Congressional hearing "because I don't wanna"? Sack up, guys! You have the power to make them answer, with Contempt of Congress charges and jail. It's pretty damned obvious this can only work if the majority Party is in on it, and doesn't want to hear the answer.
We should charge the heads of those committees with Obstruction of Justice as well, because that's exactly what they are doing. Watergate sent about 200 people to jail before it was over. Only a few were part of the original crime. Everybody else was involved in the cover-up.