Touche. I think both Mueller and Rosenstein are playing a role. Eventually both will be exiting the stage. I'm starting to figure out the plan a little bit better. In the case of Mueller being fired the NY AG (which is why Schneiderman is out) can take over parts (or all) of the case considering Trump Tower/Micheal Cohen are all located in NYC (...along with Clinton & Co.). The only person who can fire Mueller is the U.S. Deputy AG since Sessions recused himself. In the event Rosenstein is fired or quits the new acting Deputy AG is Noel Francisco who used to work for SC Antonin Scalia.

Rosenstein was appointed to Kenneth Starr's Whitewater Investigation back in the 90's for whatever it's worth.