Tex. Ins. Code § 941.154
An insurer who is subject to Article 5.26 may not directly or indirectly assume all or a substantial part of a risk covered by a policy written by a Lloyd's plan that is an affiliate of the insurer if the risk is written at a rate less than the rate that may be lawfully charged by:
Added by Acts 2001, 77th Leg., ch. 1419, Sec. 1, eff. June 1, 2003.