Special counsel Robert Mueller revealed the appointment of Matt Whitaker as acting attorney general “has no effect” on the fight to subpoena Andrew Miller, an associate of longtime Trump adviser Roger Stone.

“Acting Attorney General Whitaker’s designation neither alters the Special Counsel’s authority to represent the United States nor raises any jurisdictional issue. The Special Counsel continues to exercise the same authority, and the jurisdiction of the district court and this Court is intact,” prosecutors wrote in a brief filed Monday in the U.S. Court of Appeals for the District of Columbia Circuit.