I've seen the list and it's a mile long. Previous involvement in a case that's being re-investigated could/should definitely apply, especially the lead investigator, as Rosenstein was.
There are procedures. Did you read them? It involves making DECISIONS
It is not an automatic kick in of law with nothing else required
Sigh..rosenstein gets to make a decision..so do others in the process. If he doesnt make the decision he should based on applicable law then other decisions are made
.sessions was right to say this is not his decision
People.read the procedure