Tenn. Code Ann. § 36-6-230: Enforcement and modification of registered decrees

(a) A court of this state may grant any relief normally available under the law of this state to enforce a registered child-custody determination made by a court of another state.

(b) A court of this state shall recognize and enforce, but may not modify, except in accordance with this part, a registered child-custody determination of a court of another state.