Mr Sessions, acting on the recommendation of Federal Bureau of Investigation disciplinary officials, acted two days before Mr McCabe's scheduled retirement date. His termination could affect a portion of his anticipated pension.
McCabe has professed his innocence, and the Justice Department inspector general has neither confirmed nor denied public reports of his findings. "When I thought my answers were misunderstood, I contacted investigators to correct them", he added.
Multiple Congressional Democrats have extended job offers to ousted FBI Deputy Director Andrew McCabe, in hopes that he would be able to collect his pension.
McCabe, who had announced his intention to resign in January, was sacked from the agency in the midst of a review into the FBI's handling of the investigation into Hillary Clinton's use of a private email server while serving as secretary of State.
McCabe has identified himself as a lifelong Republican, but has said he did not vote in the 2016 presidential election. But Trump misrepresented what was said on Sunday's talk show - and misquoted the Senate hearing at which Comey testified.
He also remarked on McCabe's wife's political campaign and the fact that she had received donations from the Virginia Democratic Party and a super PAC operated by former Virginia Gov. Terry McAuliffe, a longtime friend of Hillary Clinton's.
McCabe abruptly announced he was leaving the FBI in January, amid the Justice Department's internal investigation.
In these instances, we need to ask not whether an individual did something wrong; the question is whether there is any reason to believe that is why Trump took action. Comey's book had been the 15th best seller before Trump's tweets, CNN reports.
His lawyer on Sunday said they wouldn't respond to each "childish" tweet from the president, saying the truth will eventually emerge.