Former Arizona Sen. Jon Kyl, who works as senior of counsel at Covington & Burling, is expected to return to the U.S. Senate in replacement of the late U.S. Sen. John McCain, who died last month.

Kyl served as the lead sherpa for Judge Brett Kavanaugh’s U.S. Supreme Court nomination and was absent from Tuesday’s Senate Judiciary Committee hearings on Kavanaugh’s nomination.