Tex. Bus. & Com. Code § 271.006

Except as provided by Section 271.008(b), 271.009, 271.010, or 271.011 and by Chapter 272, if the parties to a qualified transaction agree in writing that the law of a particular jurisdiction governs the interpretation or construction of an agreement relating to the transaction or a provision of the agreement, the law of that jurisdiction governs that issue regardless of whether the transaction bears a reasonable relation to that jurisdiction.