Sec. 101.156. RULES. The commissioner may adopt reasonable rules necessary to implement this chapter. Added by Acts 1999, 76th Leg., ch. 101, Sec. 1, eff. Sept. 1, 1999. Amended by: Acts 2021, 87th Leg., R.S., Ch. 60 (S.B. 1809), Sec. 15, eff. September 1, 2021. SUBCHAPTER E. INSURANCE CONTRACTS WITH UNAUTHORIZED INSURERS