Whenever an attorney general of any State has reason to believe that the interests of the residents of that State have been or are being threatened or adversely affected because any person has engaged or is engaging in a pattern or practice of telemarketing which violates any rule of the Commission under section 6102 of this title, the State, as parens patriae, may bring a civil action on behalf of its residents in an appropriate district court of the United States to enjoin such telemarketing, to enforce compliance with such rule of the Commission, to obtain damages, restitution, or other compensation on behalf of residents of such State, or to obtain such further and other relief as the court may deem appropriate.