John Dean, a key figure in the Watergate scandal, suggested on Tuesday that former President Nixon would have told President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE he’s “going too far” by trying to order the Justice Department to prosecute former FBI Director James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE and former presidential opponent Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE.

Dean, Nixon’s former White House counsel, appeared on CNN to discuss the bombshell report from The New York Times, which said that Trump had floated prosecuting the pair to his White House counsel.

CNN host John Berman called the move the “definition of Nixonian.”

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“If I had to channel a little of Richard Nixon, I think he’d tell this president he’s going too far,” Dean said. “This is the sort of stuff of a banana republic. This is what an autocrat does.”

Trump has a tendency not to “back off” until he is “forced to,” he added.

“You just said that Richard Nixon would tell Donald Trump he’s going too far?” Berman responded, appearing surprised.

“I think he would,” Dean answered. “This is a level that Richard Nixon never went to, where you went after somebody’s personal wellbeing by a criminal prosecution."

Dean said he listened to tapes of Nixon breaking the law, appearing to reference recordings of the former president discussing the break in at Democratic National Committee headquarters at the Watergate Hotel.

“While I heard him break the law on some of those tapes, I never heard him do it by turning on his enemies and trying to put them in jail,” Dean said. “This is really very, very heavy sledding.”

Dean has become an outspoken critic of Trump in recent months, calling him “evil” earlier this month.

Trump reportedly spoke with then-White House Counsel Don McGahn of his desire to prosecute Comey and Clinton in the spring of 2018.

It is unclear what charges Trump wanted prosecutors to pursue against the pair, the Times noted.

McGahn reportedly brushed off the suggestion and said Trump did not have the authority to do so but then informed the president he could.

He later warned Trump that such a request would likely elicit accusations of abuses of power.

McGahn had White House lawyers compose a memo outlining the president's authorities, which informed Trump that asking for the prosecutions could lead to Trump's impeachment or other negative consequences.