Tenn. Code Ann. § 8-26-116

Notwithstanding any law to the contrary, claims for official travel expenses of state employees and members of boards and commissions shall be subject to the uniform travel rules and regulations issued by the commissioner of finance and administration pursuant to § 4-3-1008, except for employees and members of boards and commissions attached to the court system and the general assembly, who shall be subject to travel rules and regulations under the law applying to them and approved by the head of those departments.