However, former FBI General Counsel James A. Baker told congressional investigators during a closed-door deposition earlier this month that two senior FBI officials at the time told him they believed Rosenstein was "serious".
With three weeks to go before the midterm elections, it's unlikely Mueller will take any overt action that could be turned into a campaign issue. But after Trump and Rosenstein met for 45 minutes aboard Air Force One last week, Trump said the conversation was "great", and he has no plans to fire Rosenstein.
"We're not in session right now so that's a question that would have to be answered later", he said.
"Special Counsel Robert Mueller is set to issue findings of some of the core aspects of his investigation into the alleged collusion between the Trump campaign and Russian Federation shortly after the November midterm elections", writes Fox News.
The interview, which will be under oath, will be reviewed by the Intel community and then released to the public.
The regulations of the investigation permit Mueller to reveal his findings only to his U.S. Justice Department supervisor, who now is deputy attorney general Rod Rosenstein.
"At this point, we've made multiple requests, he's not shown up". Michael Cohen, the ex-Trump attorney who was convicted of bank fraud and tax evasion in a separate investigation by federal prosecutors, is reportedly also cooperating with Mueller, as is Trump organization CFO Allen Weisselburg.
Rosenstein seemed like he was a lock to be fired or to resign from his post just a couple of weeks ago after the New York Times claiming he discussed invoking the 25th Amendment and suggested wearing a wire to record the president.