It’s Jeff Sessions’ job to fire Rosenstein and Mueller.
If he has a single ounce of integrity left in his body, that is what he’ll do. He should be willing to take whatever political heat results from that, and even fall on his sword to protect the President, if necessary.
If he sits unmoving, and forces the President to do the dirty work, he’ll open the President up to certain impeachment, and will go down in history as one of the most cowardly, back stabbing traitors to ever inhabit a cabinet post.
Will Sessions choose to be a hero or a zero? My money is on zero.
Hire & fire until competent agents are produced.
Fire Sessions, Rosenstein, Mueller.
No obstruction here, just "competent substitution".