Sen. Ron Johnson Ronald (Ron) Harold JohnsonThe Hill's 12:30 Report: Ginsburg lies in repose CHC leaders urge Senate to oppose Chad Wolf nomination Top GOP senators say Hunter Biden's work 'cast a shadow' over Obama Ukraine policy MORE (R-Wis.) says he has "no problem" with 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 testifying about his probe into the 2016 presidential election, underscoring the different points of view within the Senate GOP caucus.

"I thought it was interesting the attorney general said he had no problem with that. I would have no problem with that," Johnson told Wisconsin radio station WTMJ on Thursday, asked about Mueller testifying.

He added that he would "be happy to listen to his testimony."

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Democrats are clamoring for Mueller to testify publicly about his two-year investigation into Russian election interference and the Trump campaign, as well as how he made his decisions on collusion and obstruction of justice.

Attorney General William Barr Bill BarrHarris faces pivotal moment with Supreme Court battle Hillicon Valley: DOJ proposes tech liability shield reform to Congress | Treasury sanctions individuals, groups tied to Russian malign influence activities | House Republican introduces bill to set standards for self-driving cars McCarthy threatens motion to oust Pelosi if she moves forward with impeachment MORE said during his press conference on Thursday that he would have "no problem" with Mueller testifying before Congress.

Two House panels, the Judiciary and the Intelligence committees, have already summoned Mueller to appear publicly. Though Barr is scheduled to testify next month, no Senate committees have yet signaled they will call for Mueller to also appear.

Johnson's comments are the latest sign of division among Republicans about whether the former FBI director should be brought before the Senate.

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.), the chairman of the Senate Judiciary Committee, told McClatchy that he was "not interested" in calling Mueller to testify before his panel.

“He’s done his job,” Graham said about Mueller. "I’m not going to retry the case.”

Senate Intelligence Committee Chairman Richard Burr Richard Mauze BurrRep. Mark Walker says he's been contacted about Liberty University vacancy Overnight Defense: Trump rejects major cut to military health care | Senate report says Trump campaign's Russia contacts posed 'grave' threat Senate report describes closer ties between 2016 Trump campaign, Russia MORE (R-N.C.) hasn't commented on having Mueller testify since the report was released on Thursday.

But when asked about calling Mueller during a speech at Duke University earlier this month, Burr said that "we will probably not be calling individuals, it's probably the jurisdiction of the Judiciary Committee."

Two members of Burr's panel have taken different points of view on if Mueller should be called to testify.

Sen. Susan Collins Susan Margaret CollinsClub for Growth to spend million in ads for Trump Supreme Court nominee Maryland's GOP governor says Republicans shouldn't rush SCOTUS vote before election The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November MORE (R-Maine), a member of the Intelligence Committee, said in a statement that she was "pleased" Barr wouldn't object to Mueller testifying.

"If Mr. Mueller were to testify, it could give the Congress and the American people another opportunity to better understand the facts and conclusions that he reached during his investigation," she said.

Sen. Roy Blunt Roy Dean BluntSocial media platforms put muscle into National Voter Registration Day Senate GOP faces pivotal moment on pick for Supreme Court This week: Supreme Court fight over Ginsburg's seat upends Congress's agenda MORE (R-Mo.), a member of GOP leadership and of the Intelligence panel, described himself as "neutral" on Mueller testifying.

"The job of the special counsel is to report his findings to the attorney general. I'm neutral on whether he should come and talk about his findings or not. I think his decision not to become a media figure during the investigation itself was both extraordinary and I thought a good decision," Blunt told reporters on Thursday.