To my point of view, Rod Rosenstein is obviously a member of the deep state
There is no such thing as the "deep state." One is rapidly being formed, of course, in response to Trumputin and due almost exclusively to all of the deliberately self-fulfilling bullshit about a "deep state" that has been carefully crafted over the years and triggered now for precisely this kind of situation, but that's a different matter.
Let me qualify this. There has ALWAYS been a "deep state" shadow government in a disorganized, lazy sense of that term, meaning the men behind the throne; those in various positions of power and in various delusions of power. But it's ludicrous to call that a thing like it's in any way effective in the sense you mean. It's never been focused or unified; always a crapshoot of corruption that leans one way (toward the rich), but on par it's a fevered boogeyman.
Republicans (aka, the sociopathic rich) are the only state that exists and everyone else is trying to stop them from skullfucking the world.
That is the only state there has ever existed for thousands of years. Petty little limpdicked powermongers and their pathetic amoral sycophants and then everyone else trying to stop them from fucking us all in the ass.
What's going on now is that Trump came in a criminal thinking he's a mob boss and not understanding that he's got tiny tiny hands in a land of huge fucking hands. He's being served his just dessert and if he doesn't OD on whatever the fuck barbiturates he's clearly power-chugging every morning, he'll resign the second he can't weasel his way any further.
He is a massive coward who has just never had to actually take responsibility for anything he's ever done. Until now. And he can't believe--but is being forced to believe--that he
finally got caught and Daddy isn't around to bail him out.