@Setanta,
The fact that Mueller took on the same cadre of FBI officials who whitewashed Hillary in the "investigation" of her non compliance with law governing the handling and computer storage of highly classified material, and then proceeded to do a rather more thorough and aggressive investigation of Trump's activities, I believe there is very good reason to doubt your assertion that Mueller was a tool of the Republicans,
On the question of innocence, I agree. The investigation established the absence of probable cause for criminal activity on the part of Trump or his staffers regarding the supposed collusion with Russia. That is not the same thing as complete innocence.