They are all members of the uniparty.
President Trump is a threat to them all.
It worries me that all of the sudden the R’s in the Senate want to just get it over with. This mainly includes Lindsay Graham. I believe that when Biden issued that veiled threat to Graham during that interview with Don Lemon, that Graham caved. Notice how soon after that, they started talking about a fast resolution. We want to hear the witnesses.. Hmmmm....