Whenever it shall appear to the attorney general of any State, the administrator of the securities laws of any State, or such other official as a State may designate, that the interests of the residents of that State have been, are being, or may be threatened or adversely affected because any person (other than a contract market, derivatives transaction execution facility, clearinghouse, floor broker, or floor trader) has engaged in, is engaging or is about to engage in, any act or practice constituting a violation of any provision of this chapter or any rule, regulation, or order of the Commission thereunder, the State may bring a suit in equity or an action at law on behalf of its residents to enjoin such act or practice, to enforce compliance with this chapter, or any rule, regulation, or order of the Commission thereunder, to obtain damages on behalf of their residents, or to obtain such further and other relief as the court may deem appropriate.

The district courts of the United States, the United States courts of any territory, and the District Court of the United States for the District of Columbia, shall have jurisdiction of all suits in equity and actions at law brought under this section to enforce any liability or duty created by this chapter or any rule, regulation, or order of the Commission thereunder, or to obtain damages or other relief with respect thereto. Upon proper application, such courts shall also have jurisdiction to issue writs of mandamus, or orders affording like relief, commanding the defendant to comply with the provisions of this chapter or any rule, regulation, or order of the Commission thereunder, including the requirement that the defendant take such action as is necessary to remove the danger of violation of this chapter or of any such rule, regulation, or order. Upon a proper showing, a permanent or temporary injunction or restraining order shall be granted without bond.