In a series of statements on Twitter on June 15, 2017, Mr. Trump repeated his assertion that Mr. Mueller's investigation into Russian interference in the 2016 campaign is a "WITCH HUNT" based on the "phony" premise of possible collusion between Russia and a cadre of Trump campaign associates.
Trump advisers and confidants describe the president as increasingly angry over the investigation, yelling at television sets in the White House carrying coverage and insisting he is the target of a conspiracy to discredit - and potentially end - his presidency.
"I am being investigated for firing the FBI Director by the man who told me to fire the FBI Director!"
The new allegations against Trump center on his own admission that he fired Comey because of the Russian Federation investigation, and suggestions he asked several top intelligence officials for their help altering the inquiry's direction.
A person who has spoken to Trump within the last 24 hours told CNN "the man" in the tweet is Rosenstein, who wrote a memo recommending Comey's firing and approved the appointment of a special counsel to look into Russian election meddling.
Although he was brought on to lead the Russian Federation investigation, Mueller is allowed to look beyond it.
Earlier this week, the investigation led by Mueller appeared to move closer to Trump.
Those officials are Dan Coats, the director of national intelligence, Michael Rogers, the head of the National Security Agency and Richard Ledgett, the former NSA deputy director, according to reports.
Rosenstein brought up the possibility of recusing himself during a meeting with the Justice Department's third-in-command - behind Sessions and Rosenstein - Associate Attorney General Rachel Brand, ABC News reported.More news: Finally, Britain kicks off Brexit negotiations with EU
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The White House confirmed that Mueller was among the candidates Trump interviewed to replace Comey.
Trump's Twitter response followed days of intensifying criticism of Mueller from some conservatives who have charged the former Federal Bureau of Investigation director and his team with political bias and have claimed his relationship to Comey and an earlier meeting with Trump amount to conflicts of interest. The official demanded anonymity because the official was not authorized to be named discussing the deliberations.
Trump and his supporters have repeatedly complained about leaked reports on the progress of Mueller's investigation, many of which have appeared in either the Post or The New York Times.
"The message the president is sending through his tweets is that he believes the rule of law doesn't apply to him and that anyone who thinks otherwise will be fired", Feinstein said. An official confirmed to Fox News that Trump was referring to Rosenstein in the statement.
The White House has directed questions for details to outside legal counsel, which has not responded. Pence headed the Trump transition until Inauguration Day.
U.S. Vice-President Mike Pence has hired outside legal counsel to oversee his response to investigations into possible collusion between Russian Federation and President Donald Trump's 2016 campaign.
The Twitter attacks came as Vice-President Mike Pence hired a personal lawyer to represent him in the intensifying investigation.
The Senate Intelligence Committee has interviewed Johnson about the matter.