Maybe they know more than we do about who is doing what.
Or they’ve chosen to do nothing in the hopes that the right thing will happen... in the swamp, by the swamp... which also hasn’t been drained.
What we do know is that Sessions has publicly recused himself from all matters Hillary.
What we also know is that Sessions has publicly stated that Rosenstein should decide on his own, if he (Rosenstein) should recuse himself from all investigations ABOUT the FBI, the DOJ and Uranium One.