A decision of the Governors to approve, allow under protest, or modify the recommended decision of the Postal Rate Commission may be appealed to any court of appeals of the United States, within 15 days after its publication by the Public Printer, by an aggrieved party who appeared in the proceedings under section 3624 (a) of this title. The court shall review the decision, in accordance with section 706 of title 5, and chapter 158 and section 2112 of title 28, except as otherwise provided in this section, on the basis of the record before the Commission and the Governors. The court may affirm the decision or order that the entire matter be returned for further consideration, but the court may not modify the decision. The court may not suspend the effectiveness of the changes, or otherwise prevent them from taking effect until final disposition of the suit by the court. No court shall have jurisdiction to review a decision made by the Commission or Governors under this chapter except as provided in this section.