Whenever under section 3303(b) or section 3304(c) the Secretary of Labor makes a finding pursuant to which he is required to withhold a certification with respect to a State under such section, such State may, within 60 days after the Governor of the State has been notified of such action, file with the United States court of appeals for the circuit in which such State is located or with the United States Court of Appeals for the District of Columbia, a petition for review of such action. A copy of the petition shall be forthwith transmitted by the clerk of the court to the Secretary of Labor. The Secretary of Labor thereupon shall file in the court the record of the proceedings on which he based his action as provided in section 2112 of title 28 of the United States Code.
The findings of fact by the Secretary of Labor, if supported by substantial evidence, shall be conclusive; but the court, for good cause shown, may remand the case to the Secretary of Labor to take further evidence, and the Secretary of Labor may thereupon make new or modified findings of fact and may modify his previous action, and shall certify to the court the record of the further proceedings. Such new or modified findings of fact shall likewise be conclusive if supported by substantial evidence.
The court shall have jurisdiction to affirm the action of the Secretary of Labor or to set it aside, in whole or in part. The judgment of the court shall be subject to review by the Supreme Court of the United States upon certiorari or certification as provided in section 1254 of title 28 of the United States Code.