The switch, announced on Trump's Twitter feed, provoked instant consternation across Washington, where politicians from both sides of the aisle have long warned that political interference in Mueller's work can not be tolerated. He wrote past year on CNN.com that Deputy Attorney General Rod Rosenstein should limit the scope of Mueller's investigation to stop him from delving into Trump's finances. Whitaker has spoken critically about the Mueller probe and spoke in a TV interview about choking off its funding. "I'm concerned Rod Rosenstein will no longer be overseeing the probe".
The Washington Post reported that Whitaker has no intention of recusing himself, following howls from Democrats about his past statements on the special counsel.
In August 2017, Whitaker tweeted an opinion piece, quoting its title, "Note to Trump's lawyer: Do not cooperate with Mueller lynch mob", and saying it was "Worth a read". Several months ago, Republicans warned that were Trump to replace Sessions, the Senate might not get to a successor, but those admonitions have evaporated.
Among his other qualifications for the job, interim replacement Matt Whitaker has said that the probe has "gone too far", and could be easily obstructed if only the Justice Department were controlled by a partisan loyalist willing to choke funds and seal records at the president's direction. He added that it had "been a privilege" to work under Sessions. Last month, he claimed Trump jokingly asked if he wanted it.
What does this mean for the Mueller probe?"I'm not recused, you're not recused", Conway told reporters. President Trump forced Sessions out as the nation's chief law enforcement officer on Wednesday, one day after Democrats captured the House in the midterm elections.
The appointment generated immediate controversy given Mr Whitaker's previous public comments criticising the probe.
In July 2017, he said during an interview on CNN that he could envision a scenario under which a temporary attorney general doesn't fire Mueller but rather "just reduces his budget to so low that his investigations grinds to nearly a halt".
In 2017 he even used Trump's words, warning against Mueller engaging in a "witch hunt".
Mr Sessions, who was an early backer of the Trump campaign, recused himself in March 2017 from overseeing the Russian Federation investigation under a similar rule which prohibits officials from overseeing investigations into subjects with whom they have a "a personal or political relationship".
"It's a break the glass moment".
Florida Attorney General Pam Bondi is being considered by President Trump to become the next USA attorney general, two national news services are reporting.
'Never before has a President designated an acting attorney general who had not previously been serving in a Senate-confirmed position, ' the group wrote in a letter to the Justice Department.
Sessions, a 71-year-old former Republican senator from Alabama, was the first senator to endorse Trump's insurgent presidential campaign. And he's one step closer to being able to do just that. Trump has not interfered with it yet, despite repeatedly labelling it a "hoax" and a "witch-hunt". They also said they will continue to conduct parallel investigations alongside special counsel Robert Mueller's probe, and urging them to preserve all relevant documents.
Sessions is departing as Mueller's Russian Federation investigation grinds on. Four former Trump campaign officials - including his onetime national security adviser Michael Flynn and campaign chairman Paul Manafort - are among those who have pleaded guilty.
The Democrats, who won the House in the mid-terms, have vowed to protect it.
A political analyst in the state predicted Sessions would run for the seat.
Russian Federation denies meddling in the election, and Trump denies any "collusion" with Russian Federation.
Sessions took the lead in imposing Trump's travel ban targeting a number of mostly Muslim nations, canceling the so-called Dreamer program that let the children of undocumented immigrants remain in the USA and forcing the separation of migrant families as part of a border crossing crackdown.
He bolstered the agenda of Trump's evangelical supporters with new rules letting employers opt out of providing health insurance that covers birth control and paving the way for religious businesses and employees to discriminate based on their closely held beliefs.