promulgated under this Act shall be subject to the penalties and entitled to the privileges and immunities provided in the Federal Trade Commission Act ( 15 U.S.C. 41 et seq. ). (C) Authority preserved Nothing in this Act shall be construed to limit the authority of the Commission under any other provision of law. (3) Rulemaking The Commission shall promulgate in accordance with section 553 of title 5, United States Code, such rules as may be necessary to carry out this Act. (b) Enforcement by States (1) Authorization Subject to paragraph (2), in any case in which the attorney general of a State has reason to believe that an interest of the residents of the State has been or is adversely affected by the engagement of any person in an act or practice that violates this Act or a regulation promulgated under this Act, the attorney general of the State may, as parens patriae, bring a civil action on behalf of the residents of the State in an appropriate district court of the United States to— (A) enjoin that act or practice