Texas Code of Criminal Procedure - CRIM P Art. 2.1305. Carrying Weapon on Certain Premises

(a) An establishment serving the public may not prohibit or otherwise restrict a peace officer or special investigator from carrying on the establishment's premises a weapon that the peace officer or special investigator is otherwise authorized to carry, regardless of whether the peace officer or special investigator is engaged in the actual discharge of the officer's or investigator's duties while carrying the weapon.

(b) For purposes of this article:

(c) An establishment serving the public that violates this article is subject to a civil penalty in the amount of $1,000 for each violation. The attorney general may sue to collect a civil penalty under this subsection. Money collected under this subsection shall be deposited in the state treasury to the credit of the general revenue fund.