It's said, keep your friends close, your enemies closer. That said, I have suspected for a while now that Mueller isn't all that bad. Watch his actions, not his words.
He's either the dumbest yokel to fall off the turnip truck, or he's playing them. For me to believe the former, I'd have to also state Donald Trump is a total moron, which he isn't. So, I suspect Mueller is playing the swamp, setting them up. Dirty? Obviously. But if I had to give ONE person immunity, it would be Mueller. He's already out of government, so no need to oust him (other than special prosecutor). Just pay attention to who he's indicted so far. Mostly swamp creatures and hacks prior to working for Trump.