After the hearing, the Secretary shall issue a ruling on the petition which shall be final if the petition is in accordance with law.
The district court of the United States for any district in which the person who is a petitioner under subsection (a) resides or carries on business is vested with jurisdiction to review the ruling on the petition of the person, if a complaint for that purpose is filed not later than 20 days after the date of the entry of a ruling by the Secretary under subsection (a).
Service of process in the proceedings shall be conducted in accordance with the Federal Rules of Civil Procedure.
The pendency of a proceeding instituted pursuant to subsection (a) shall not impede, hinder, or delay the Attorney General or the Secretary from obtaining relief pursuant to section 7468 of this title.