Just two days after firmly telling reporters he had no intention of bringing special counsel Robert Mueller in for questioning before the Senate Judiciary Committee, Sen. Lindsey Graham sent Mueller a letter inviting him to do just that — but with a caveat.

Graham told Mueller that if he felt Attorney General William Barr misrepresented the content of their phone call following Barr’s release of a summary of Mueller’s report, during his congressional testimony, he was welcome to come in and testify.

Just before Barr’s testimony on Wednesday, reports surfaced that Mueller sent Barr a letter complaining that Barr’s summary of his report did not “fully capture the context, nature and substance” of his investigation. During his testimony this week, Barr told lawmakers that after Mueller sent the letter, the two spoke on the phone and Mueller clarified that he didn’t have a problem with the accuracy of Barr’s summary, but wanted more of it released sooner.

“Please inform the committee if you would like to provide testimony regarding any misrepresentation by the attorney general of the substance of that phone call,” Graham wrote in the letter.

Read the full letter below: