; rules of procedure (1) Hearings (A) In general Hearings under this division may be held before the Commission or any representative of the Commission designated by the Commission. (B) Records The Commission shall keep appropriate records of any hearing described in subparagraph (A). (C) Admission of parties In any proceeding before it, the Commission, in accordance with any rules that the Commission may prescribe, may admit as a party— (i) any interested State, State commission, or municipality; (ii) any representative of interested consumers or security holders; (iii) any competitor of a party to the proceeding; or (iv) any other person whose participation in the proceeding may be in the public interest, as determined by the Commission. (2) Rules of procedure (A) In general The Commission— (i) shall adopt rules of practice and procedure that govern each hearing, investigation, or proceeding under this division; and (ii) need not apply the Federal Rules of Evidence in the conduct of a hearing, investigation, or proceeding under this division. (B) Effect of informalities No informality in any hearing, investigation, or proceeding or in the manner of taking testimony shall invalidate any order, decision, or rule issued under the authority of this division. (c) Administrative enforcement In addition to other orders authorized under this division, the Commission may, after providing notice and an opportunity for a hearing— (1) issue an order enjoining a person from engaging in a practice or behavior that violates this division or a rule promulgated under this division; (2) issue an order imposing a civil penalty on a person for a violation of this division, a rule promulgated under this division, or an administrative order issued under this division, not later than 6 years after the date on which the violation occurs, not to exceed 15 percent of the total annual revenue of the person’s ultimate parent entity during the preceding 12-month period