The Secretary shall not finally disapprove any application for a State program submitted under section 1070c–2 of this title, or any modification thereof, without first affording the State agency submitting the program reasonable notice and opportunity for a hearing.

If any State is dissatisfied with the Secretary’s final action with respect to the approval of its State program submitted under this subpart or with his final action under subsection (a), such State may appeal to the United States court of appeals for the circuit in which such State is located. The summons and notice of appeal may be served at any place in the United States. The Commissioner shall forthwith certify and file in the court the transcript of the proceedings and the record on which he based his action.

The findings of fact by the Secretary, if supported by substantial evidence, shall be conclusive; but the court, for good cause shown, may remand the case to the Secretary to take further evidence, and the Secretary may thereupon make new or modified findings of fact and may modify his previous action, and shall certify to the court the transcript and record of 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 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 title 28, section 1254.