The investigation into Federal Reserve Chairman Jerome Powell has hit a roadblock, creating uncertainty around Kevin Warsh's potential succession. The U.S. Department of Justice is backing a federal prosecutor's appeal against a court ruling that dismissed a subpoena against the Fed. This move, supported by the White House, intensifies the legal battle and affects the future leadership of the Federal Reserve. Former President Trump, initially open to ending the investigation, now reportedly supports an appeal following the court's decision. Federal Prosecutor Jeanne Piro announced her intention to appeal, with the Justice Department's leadership backing her. The ongoing legal proceedings could delay Warsh's appointment as the new Federal Reserve Chairman, prolonging the controversy surrounding Powell's investigation.