Tenn. Code Ann. § 56-45-111

The commissioner is authorized to make use of any of the powers established under the insurance code of this state to enforce the laws of this state not specifically preempted by the Risk Retention Act of 1986, including the commissioner's administrative authority to investigate, issue subpoenas, conduct depositions and hearings, issue orders, impose penalties and seek injunctive relief. With regard to any investigation, administrative proceedings or litigation, the commissioner can rely on the procedural laws of this state. The injunctive authority of the commissioner, in regard to risk retention groups, is restricted by the requirement that any injunction be issued by a court of competent jurisdiction.