Tex. Fin. Code § 66.403
If a promise or agreement to lend money is not otherwise unenforceable under Chapter 26, Business & Commerce Code, and if the promise or agreement is made by the association before the association is placed under conservatorship or supervisory control, the promise or agreement or a memorandum of the promise or agreement is enforceable against the association only if the promise or agreement or memorandum:
Acts 1997, 75th Leg., ch. 1008, Sec. 1, eff. Sept. 1, 1997.