Deputy Attorney General Rod Rosenstein said on Wednesday that the special counsel Robert Mueller's Russia investigation has already revealed an elaborate and widespread effort by the Russians to meddle in the 2016 US election.
Sessions is widely rumored to be leaving after the November midterm elections, and Trump is expected to clean house at the DOJ then as well.
Meanwhile, Rosenstein's own job hangs in the balance following a New York Times report that said the deputy attorney general suggested secretly recording Trump and invoking the 25th Amendment to remove him from office shortly after Trump fired then FBI director James Comey last year.
"I believe that our department and our office have been appropriately managing that investigation," Rosenstein told The Journal, referring to the Russia probe.
Two US officials told Bloomberg that Mueller is expected to deliver his key findings shortly after the midterms.