If that's true, then the Senate might not today, when it doesn't have access to The Memo, but it might when The Memo is finally released and it becomes clear Rosenstein was a ringleader and HAS to be kicked out of office. With Sessions recusing himself on so much, there's no question he needs a deputy. It's just that he needs one who is on Trump's side, not on the side of the now out-of-office conspirators who had dreams of becoming lifetime dictators.
And there are at least 53 of them sitting in the US Senate right now.