Lindsey Graham asks Mueller if he wants to testify about his issues with Barr's handling of his report

Sen. Lindsey Graham (R-SC) on Friday sent a letter to special counsel Robert Mueller that asked him if he wanted to testify before the Senate about any problems he had with how Attorney General Bill Barr handled his report on Russian interference in the 2016 presidential election.

In his letter to Mueller, Graham referenced testimony given by Barr this week in which Barr claimed that Mueller told him he was not upset by the attorney general's four-page summary of his work, but rather of media reports on that four-page summary.

"Please inform the Committee if you would like to provide testimony regarding any misrepresentations by the Attorney General of the substance of that phone call," Graham said in the letter.

Graham earlier this week indicated that he was not inclined to have Mueller testify before the Senate, and he said that he felt he was "done" with any investigation into Russian interference in the 2016 presidential election.

It is unclear what promoted Graham to shift gears on Friday and ask Mueller for his input.

Read the entire letter to Mueller below.