Section 301.006 - Claim or Defense for Prohibited Rule or Policy(a) The board may not adopt a rule, regulation, or policy that violates Chapter 110, Civil Practice and Remedies Code.(b) A person may assert a violation of Subsection (a) as an affirmative defense in an administrative hearing or as a claim or defense in a judicial proceeding under Chapter 37, Civil Practice and Remedies Code.Added by Acts 2017, Texas Acts of the 85th Leg. - Regular Session, ch. 509,Sec. 5, eff. 9/1/2017.