Tenn. Code Ann. § 45-1-123: Legal counsel for commissioner

(a) The district attorneys general in each county, when requested by the commissioner, shall, as a part of their official duty and without compensation, represent the commissioner in any suit that the commissioner may desire to bring, or that may be brought against the commissioner, in the commissioner's official capacity, in their respective counties.

(b) The attorney general and reporter shall advise the commissioner on any question of law submitted to the attorney general and reporter by the commissioner, respecting the commissioner's authority and duties under the law.