Texas Natural Resources Code - NAT RES § 82.0102. Enforcement of Certain Federal Laws Regulating Oil and Gas Operations

(a) An agency of this state or a person employed by an agency of this state may not contract with or in any other manner provide assistance to a federal agency or official with respect to the enforcement of a federal statute, order, rule, or regulation purporting to regulate oil and gas operations if the statute, order, rule, or regulation imposes a prohibition, restriction, or other regulation that does not exist under the laws of this state.

(b) The attorney general shall defend any agency of this state that the federal government attempts to sue for an action or omission consistent with the requirements of this section.

(c) This section does not prohibit a state agency from: