Tex. Ins. Code § 2201.258
(b) A purchasing group, a group member, or any claimant against the group or group member may not receive any benefit from an insurance insolvency guaranty fund or similar mechanism in this state for a claim arising under an insurance policy procured through the group unless the policy is underwritten by an insurer authorized to engage in business in this state that, at the time of the policy's issuance:
Added by Acts 2005, 79th Leg., Ch. 727 (H.B. 2017), Sec. 2, eff. April 1, 2007.