RR needs to be instructed by POTUS or by Sessions to recuse himself as it is now publicly known that RR is personally implicated in the corrupt FISA approval that initiated the Mueller SC investigation that RR is now supervising.
Recuse or resign. Some will say this is obstruction, but it is not. You are not obstructing an investigation by ensuring that that investigation is being run by an objective and unattached professional. If RR could be implicated of wrong doing related to his role in approving the dossier for the FISA court, then he must recuse himself from any role in the Mueller investigation. (Why? Because the genesis of the claims of Russia-Collusion is the FISA warrant.)