I think the hand wringing is from the oligarchy feeling like they are losing a little more control. It makes me happy to see their anguish.
I think the R’s supporting McCartney are scared to death of any investigations and the know they can get Kevin to squelch them. I think they are up to their eyeballs in corruption along with some of their grown children. They are treating the opposition the exact same way they treated Trump. Scared of their crimes being exposed imho.