Ruddy appeared to be basing his remarks, at least in part, on comments from Jay Sekulow, a member of Trump's legal team, who told ABC in an interview Sunday that he was "not going to speculate" on whether Trump might at some point order Rosenstein to fire Mueller.
With few exceptions, Trump's allies are urging him not to move to dismiss Mueller, which would be both politically and technically complicated.
Trump has made no decision to act against Mueller and insists that he knows the risks of doing so but people close to the president say Trump is so volatile they can not be sure that he will not change his mind if he finds out anything to lead him to believe the investigation has been compromised, The New York Times said.
He told a Senate panel Tuesday that he, and not Attorney General Jeff Sessions, who had the authority to terminate Mueller. Rosenstein said he has seen no evidence of good cause to fire the special prosecutor overseeing the Russian Federation investigation. Trump called because "I have been very clear" about Mueller and the lawyers he's hired amounting to a "rigged game", Gingrich said. Even though it is reported that the president understands how risky firing Mueller will be, those close to him feel that Trump is "so volatile they can not be sure that he won't change his mind if he finds out anything to lead him to believe the investigation has been compromised".
Trump has the power to unilaterally remove Mueller from the job, but legal experts argue that would create a crisis in American institutions.
Still, it took until Tuesday night for the White House to actually dispute Ruddy's suspicion.
Ruddy, the CEO of Newsmax, raised the possibility of the president considering terminating Mueller.
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Trump has disputed Comey's account of the conversation about Flynn as inaccurate, although his oldest son, Donald Trump Jr., a frequent defender of his father's White House performance, seemed to confirm the gist of it.
Rosenstein offered his assurances as US news accounts quoted Republican allies of Trump suggesting that the president is considering firing Mueller, whose appointment last month drew widespread praise from both Republicans and opposition Democrats.
Ruddy says that Spicer asked him to issue a follow-up statement or a tweet indicating that he never spoke to Trump about firing Mueller and so does not know first-hand that it is something the president is considering.
Trump was apparently bothered by reports from conservative outlets like Breitbart News linking Mueller to Comey. The person demanded anonymity to discuss strategy on the sensitive matter.
President Trump is known to value the element of surprise.
Gingrich said on Twitter that 'Republicans are delusional if they think the special counsel is going to be fair.
According to a senior White House aide, there are no private conversations taking place about firing Mueller, and a White House spokesperson said Ruddy "speaks for himself".
Sarah Huckabee Sanders, a White House spokeswoman, said on Monday that "Chris speaks for himself", but declined to comment further.