CBS's "Face the Nation" host Margaret Brennan on Sunday pressed 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's personal attorney Rudy Giuliani Rudy GiulianiThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting CIA found Putin 'probably directing' campaign against Biden: report Democrats fear Russia interference could spoil bid to retake Senate MORE over what she called "contradictory" positions on 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 investigation.

With Giuliani appearing on "Face the Nation" for an interview Sunday, Brennan said he was "impugning their credibility" while also "accepting and supporting their conclusions" in reference to Mueller's team, which investigated Russian interference in the 2016 election.

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"That’s a bit contradictory," she said. "You’re accusing them of bias but you agree with their conclusions."

.@RudyGiuliani told @margbrennan that “the Mueller group has been leaking all along.”

MARGARET BRENNAN: “But for 22 months, you have to acknowledge the special counsel's office did not leak.”

GIULIANI: “Hell no.”https://t.co/usYVB768J2 pic.twitter.com/g9i8wMmA0V — Face The Nation (@FaceTheNation) April 7, 2019

Giuliani, who denied that his positions were contradictory, has accused members on Mueller's team of being "sneaky, unethical leakers" and "rabid Democrats who hate the president of the United States." He added Sunday that the "Mueller group has been leaking all along."

Giuliani has also praised the conclusions of the special counsel's investigation that Attorney General William Barr Bill BarrProsecutor says no charges in Michigan toilet voting display Judge rules Snowden to give up millions from book, speeches The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE summarized last month in a letter to lawmakers. Barr said Mueller determined that the Trump campaign did not conspire with Russia ahead of the 2016 presidential election.

Giuliani said Sunday on "Face the Nation" that he accepted the conclusions "because there is nothing there."

"And they tried to make things up," he claimed. "They put so much pressure on people, keeping them in solid confinement.