He has also started to direct some of his anger at Deputy Attorney General Rod Rosenstein, who oversees special counsel Robert Mueller's Russian Federation probe, according to the AP and the New York Times. He has publicly said he didn't care about the recommendations of his attorney general and deputy attorney general.
But Justice Department spokesman Ian Prior issued a statement on Friday saying Rosenstein remains in a supervisory role, at this point.
If Rosenstein were to recuse himself, the task of overseeing the special counsel would fall to the Justice Department's third-highest-ranking official, Rachel Lee Brand.
President Donald Trump continued a campaign on Twitter on Friday against the investigations into possible links between his campaign and Russian Federation.
What could change the math for Trump is if he begins to swing wildly, attacking not only the people coming to get him, but officials like Sessions and Rosenstein who are trying to save him from himself.
Special Counsel Mueller was reportedly planning to interview intelligence officials on whether Mr Trump got rid of the Federal Bureau of Investigation director, James Comey, in May to hamper an inquiry into his sacked national security adviser, Michael Flynn.
There is wide consensus that Trump is not doing himself any legal favors by repeatedly referring to it on Twitter.
Trump did not do anything to interfere with the investigation of Russia's interference in the election. Last night, Rosenstein put out an unusual statement telling Americans to be skeptical about anonymous allegations and stories based on unnamed sources.
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 public interest requires me to place this investigation under a person who exercises a degree of independence from the normal chain of command", Rosenstein said in his announcement last month. "The Department of Justice has a long-established policy to neither confirm nor deny such allegations".
The president's tweets came two years to the day after Trump first launched his improbable presidential bid by famously descending an escalator in Trump Tower in NY, and while his presidency is embroiled in crisis over the federal investigation led by Mueller into his campaign's ties to Russian Federation.
Although USA Today also noted that the tweet came shortly after a Washington Post report that Mueller's team is also investigating Trump son-in-law and adviser Jared Kushner's business dealings. With just about a week to go before India's Prime Minister Narendra Modi is scheduled arrive in Washington to meet Trump on June 26, the U.S. capital is awash with intrigue and suspense, with frequent parlor talk about if and when Trump will throw in the towel and the prospect of a "President Pence".