Section 21.009 - Joinder of Commission(a) In any civil action in which the validity of a provision of this chapter or Chapter 461, Government Code, a rule adopted under this chapter or Chapter 461, Government Code, or the application of the provision or rule is challenged as void, unconstitutional, or unenforceable, the commission shall be made a party to the proceedings, and, on the motion of the commission, venue of the cause may be transferred to the district courts of Travis County.(b) An order restraining the commission or invalidating a provision of this chapter or Chapter 461, Government Code, or a commission rule adopted under this chapter or Chapter 461, Government Code, may not be enforced and may not take effect until the commission has answered and appeared in the action and has exhausted all avenues of appeal and any judgment is final and enforceable.(c) Notwithstanding any other provision of state law, including this chapter, only the commission, if a prevailing party, may recover costs and attorney's fees in such a declaratory proceeding under this section.Added by Acts 1995, 74th Leg., ch. 76, Sec. 9.08(a), eff. 9/1/1995.