Sen. Marco Rubio Marco Antonio RubioOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Democrats step up hardball tactics as Supreme Court fight heats up Press: Notorious RBG vs Notorious GOP MORE (R-Fla.) said Sunday that it would be a "terrible mistake" for President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE to pardon former campaign chairman Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE.

“I think it would be a terrible mistake if he did that," Rubio told ABC's "This Week" when asked about Trump's comments that he would not take a pardon for Manafort off the table, saying it could "trigger a debate as to whether pardon powers should be amended.”

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"Pardons should be used judiciously," Rubio said. "They're used for cases of extraordinary circumstances and I just haven't heard

that the White House is thinking about doing it."

"I know he hasn’t ruled it out, but I haven't heard anyone say, we're thinking about doing it."

"I don't believe that any pardons should be used with a relation to these particular cases, frankly," Rubio added.

"Not only does it not pass the smell test, I think it undermines the reason that we have presidential pardons in the first place," he said.

Republican Sen. Marco Rubio says repeatedly that President Trump pardoning former campaign chairman Paul Manafort would be a “terrible mistake,” and that doing so could possibly “trigger a debate about whether the pardon powers should be amended" https://t.co/QasWMG5Ixy #ThisWeek pic.twitter.com/EWbjy4E6nc — This Week (@ThisWeekABC) December 9, 2018

Rubio made similar comments on CNN the same morning, calling it a "huge political mistake."

Special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's office said in a heavily redacted filing Friday that Manafort lied to prosecutors about his contacts with the White House and an associate with suspected ties to Russian intelligence after signing a plea agreement with Mueller's office.

The filing emerged more than a week after prosecutors accused Manafort of "committing federal crimes by lying to the Federal Bureau of Investigation and the special counsel’s office on a variety of subject matters” in breach of his plea agreement.