McGahn reportedly told the president that he does not have the authority to order prosecutions - such decisions are to be made by prosecutors themselves, based on the facts at hand.
McGahn had White House lawyers draft a memo explaining potential consequences of Trump ordering a prosecution, which included the potential of impeachment charges, according to the Times. But department officials reported declined this request.
The president named Pat Cipollone as his replacement, but the noted commercial lawyer and conservative Catholic activist has not been seen at the White House. It's unclear if Trump read McGahn's briefing.
The encounter was one of the most blatant examples yet of how Mr. Trump views the typically independent Justice Department as a tool to be wielded against his political enemies.
Trump has continued to privately discuss the matter of prosecuting his longtime adversaries, including talk of a new special counsel to investigate both Clinton and Comey, the newspaper said, citing two people who had spoken to Trump about the matter.
Trump largely alone as world leaders take goal at nationalism
Trump , on the other hand, took a profound statement about worldwide obligations and interpreted it as a personal attack . Angela Merkel, the German chancellor, on Tuesday backed his defence plans. "Don't say I never give you anything".
In January, CNN reported that the Arkansas attorney and FBI were investigating possible corruption within the Clinton Foundation.
The report about Trump's alleged move to push the Justice Department into prosecuting opponents comes as he faces accusations of seeking to tamper with a probe by special counsel Robert Mueller into his election campaign's alleged collusion with Russian Federation.
CNN's John Berman called out Donald Trump on Wednesday over reports that the president spoke with now-acting attorney general Matt Whitaker extensively despite his recent insistence to the contrary. "Comey is at *the center* of the Russian Federation probe. While I heard him break the law on some of those tapes, I never heard him do it by burning on his enemies and trying to put them in jail", he said. "So this new report is right in Mueller's strike zone - he can investigate this as part of alleged obstruction".
"My sense is this president often says things that reflect frustration and maybe a little bit of desperation, but nothing really comes of it", he said.
Cody Fenwick is a reporter and editor.