Senate Judiciary Committee Chairman Lindsey Graham said he has full confidence in attorney general nominee Bill Barr to oversee the Department of Justice responsibly if confirmed.

Barr, who formerly served under President George H. W. Bush in that role, was on the Hill Tuesday for a confirmation hearing.

Graham said there is no evidence of Trump-Russia collusion, but that there is indeed evidence of corruption at the higher ranks of the DOJ. He said he hopes Barr will be the man to investigate the issue.

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"Mr. Barr believes that politicians should not interfere in criminal investigations," Graham (R-S.C.) said. "But he also believes that criminal investigators should not be out to get politicians, and they were out to get Trump."

Graham said he wants Barr to find out if indeed there was a counterintelligence probe on the president, and if so, how it got started.

The New York Times reported last week that the FBI opened a probe on Trump due to his behavior shortly after he fired former FBI director James Comey in May 2017.

"I want him to clean up this mess. I think the president picked the right guy to do this," Graham said.

Graham recently took over the reins of the committee from Iowa Republican Sen. Chuck Grassley, who faced committee-chairmanship term limits.

Other current members include new Sen. Josh Hawley (R-Mo.) -- who defeated Claire McCaskill in 2018 -- Grassley, Sen. Ted Cruz (R-Texas), Sen. Mazie Hirono (D-Hawaii), Sen. Kamala Harris (D-Calif.) and Ranking Member Dianne Feinstein (D-Calif.).

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