If this gets close enough to indictment where it might reflect badly on Trump and/or Congressional Republicans, one of them will find a way to tank the investigation. They've been doing it for a while after all. People like McConnell, Ryan, Nunes have absolutely no morals and will do anything regardless of illegality or ethics to advance their own position.
I believe that what you say is the way the truth looks on the surface, what you see if you have been watching conservatives in action, but I see something deeper, I believe, a fact of human psychology, that puts it in a different light. Conservatives more than liberals come from authoritarian households where virtues derive from absolute religious texts, where there are clear cut lines that determine an absolute good and an absolute evil with reward and punishment distributed accordingly. We can call them carrot and stick people. Their moral values are based on hope and fear, an absolute believe in an absolute good and a terror of some monstrous evil.
The only escape from the horror of such a life of endless tension is in certainty. Once you convince yourself of your own absolute inner good everything is fine. The internal anxiety can be suppressed. So what you call no morals and a willingness to do anything is really certainty that their ends justify any means. This is what it means to know what is right. It is the same with the authoritarian left.
Because we cannot face our childhood traumatic fears we build a world in which we are forced to relive them. We are trying to get back to our original selves, by recreating the traumatic events all over again in the world today rather than reliving them as they happened long ago in the past. It is what we are unconsciously driven to do, to create the hell we feel we deserve and which our certainty is there to mask.
I mention this because there is a way out but it is the last place anybody wants to go.