Tex. Civ. Practice & Remedies Code Section 129.002
Rights, Privileges, or Obligations

A law, rule, or ordinance enacted or adopted before August 27, 1973, that extends a right, privilege, or obligation to an individual on the basis of a minimum age of 19, 20, or 21 years shall be interpreted as prescribing a minimum age of 18 years.

Acts 1985, 69th Leg., ch. 959, Sec. 1, eff. Sept. 1, 1985.