Tex. Penal Code § 7.03: DEFENSES EXCLUDED.

In a prosecution in which an actor's criminal responsibility is based on the conduct of another, the actor may be convicted on proof of commission of the offense and that he was a party to its commission, and it is no defense:

(1) that the actor belongs to a class of persons that by definition of the offense is legally incapable of committing the offense in an individual capacity; or

(2) that the person for whose conduct the actor is criminally responsible has been acquitted, has not been prosecuted or convicted, has been convicted of a different offense or of a different type or class of offense, or is immune from prosecution.

Acts 1973, 63rd Leg., p. 883, ch. 399, Sec. 1, eff. Jan. 1, 1974. Amended by Acts 1993, 73rd Leg., ch. 900, Sec. 1.01, eff. Sept. 1, 1994.