Any complaint by any person that a violation of any section of title 39 referred to in subsection (d) of this section (or any other Federal law which does not include any criminal penalty or any rule of the House of Representatives relating to franked mail) is about to occur, or has occurred within the immediately preceding period of one year, by any person referred to in such subsection (d), shall contain pertinent factual material and shall conform to regulations prescribed by the Commission. The Commission, if it determines there is reasonable justification for the complaint, shall conduct an investigation of the matter, including an investigation of reports and statements filed by the complainant with respect to the matter which is the subject of the complaint. The Commission shall afford to the person who is the subject of the complaint due notice and, if it determines that there is substantial reason to believe that such violation has occurred or is about to occur, opportunity for all parties to participate in a hearing before the Commission. The Commission shall issue a written decision on each complaint under this subsection not later than thirty days after such a complaint has been filed or, if a hearing is held, not later than thirty days after the conclusion of such hearing. Such decision shall be based on written findings of fact in the case by the Commission. Such findings of fact by the Commission on which its decision is based are binding and conclusive for all judicial and administrative purposes, including purposes of any judicial challenge or review. Any judicial review of such decision, if ordered on any ground, shall be limited to matters of law. If the Commission finds in its written decision, that a serious and willful violation has occurred or is about to occur, it may refer such decision to the Committee on Standards of Official Conduct of the House of Representatives for appropriate action and enforcement by the committee concerned in accordance with applicable rules and precedents of the House and such other standards as may be prescribed by such committee. In the case of a former Member of the House or a former Member-elect, a former Resident Commissioner or Delegate or Resident Commissioner-elect or Delegate-elect, any surviving spouse of any of the foregoing (or any individual designated by the Clerk of the House under section
), or any other former House official, if the Commission finds in its written decision that any serious and willful violation has occurred or is about to occur, then the Commission may refer the matter to any appropriate law enforcement agency or official for appropriate remedial action. Notwithstanding any other provision of law, no court or administrative body in the United States or in any territory thereof shall have jurisdiction to entertain any civil action of any character concerning or related to a violation of the franking laws or an abuse of the franking privilege by any person listed under subsection (d) of this section as entitled to send mail as franked mail, except judicial review of the decisions of the Commission under this subsection. The Commission shall prescribe regulations for the holding of investigations and hearings, the conduct of proceedings, and the rendering of decisions under this subsection providing for equitable procedures and the protection of individual, public, and Government interests. The regulations shall, insofar as practicable, contain the substance of the administrative procedure provisions of sections
701–706, of title
. These regulations shall govern matters under this subsection subject to judicial review thereof.