Trump is clean or Obama would have had him indicted and destroyed.
Not to say that Mueller can't have him framed, but even that is a long shot because Obama couldn't get rid of him even after having the U.S. and UK IC spy on Team Trump probably going back to the early "birther" days.
Trump is making a real bad mistake not firing Mueller. He is losing me and many of my friends. It is now at a point that he cannot understand what is happening. Disappointed.
