Former special counsel Robert Mueller has declined an invitation to testify about the Russia investigation before the Senate Judiciary Committee, according to Chairman Lindsey Graham.

“He says he doesn’t have enough time,” the South Carolina Republican said Wednesday evening on Fox News host Sean Hannity’s show. Graham also announced that former FBI Director James Comey agreed to testify at the end of the month, declaring “the day of reckoning is upon us when it comes to Crossfire Hurricane.”