I agree that he cant give a clean not guilty because then everyone would know it was a set up......it will be the Russians did help trump but we could not conclusively find evidence that trump knew about it
Just a thought about the opposite happening. Mueller has been a darling of the Left, but imagine if he came out with a report stating his investigators could find no credible evidence that Team Trump ever colluded with Russia. The Left would turn on him in an instant.