agree- firing him now may be the best thing for rosenstein...let him wallow in the mire...
Try now and we can only lose.
Rosenstein, the Dems and the media will immediately flip it and use it as fuel for obstruction of justice, impeachment, or whatever else they want.
So yeah, tell him that unless he’s there to willingly resign, he can march his happy ass right back to his office and get back to work.