Sen. Lindsey Graham Lindsey Olin GrahamSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (R-S.C.), a frequent vocal supporter of 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, on Wednesday described 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 Russia investigation as a “political rectal exam.”

“After two years of a political rectal exam, nobody’s been looked at more than Trump,” the senator said in an appearance on Fox News. “They found nothing. But the answer for the Democrats is ‘Trump’s gotta go.’ ”

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“They will not beat him at the ballot box and if they try to impeach him, they’re going to ensure his reelection,” Graham continued. “I want the American people to know that Bob Mueller did his job.”

Mueller’s investigators wrote in the long-awaited report that was released with redactions last month that they were “unable” to say definitively whether Trump committed obstruction of justice because of “difficult issues” presented by the evidence.

Democrats in Congress have since moved opened — or moved forward with — a series of investigations into Trump’s campaign, businesses and administration, which Graham called “political revenge."

Graham, chairman of the Senate Judiciary Committee, said earlier this month he will not ask Mueller to testify before his panel about his nearly two-year-long investigation, but said the special counsel could testify if he wished.

“I'm not going to do any more. Enough already. It's over,” Graham said.