McKinnon pulls into the show Sally Yates, the former acting attorney general fired by Trump for refusing to defend his travel ban, to underscore the contrast between the manic president and the methodical prosecutor. "Bob Mueller is just the right guy to be doing this," Yates tells McKinnon. "Tweets, I would imagine, are just rolling off his back, and he's going to call it like he sees it. And that means if there are cases to be made, he's going to make them. But equally important here, if there are not cases to be made, he's going to call it fairly."