Tex. Agric. Code § 168.008
(a) A person commits an offense if the person refuses to:
Acts 1981, 67th Leg., p. 1456, ch. 388, Sec. 1, eff. Sept. 1, 1981.
Amended by Acts 1989, 71st Leg., ch. 836, Sec. 71, eff. Sept. 1, 1989;
Acts 1991, 72nd Leg., ch. 40, Sec. 2, eff. April 19, 1991;
Acts 1991, 72nd Leg., 1st C.S., ch. 14, Sec. 2.01, eff. Nov. 12, 1991.