Sec. 403.455. RULES. The comptroller or agencies identified in Section 403.453 may adopt rules as necessary for the administration of this subchapter. Added by Acts 2011, 82nd Leg., 1st C.S., Ch. 4 (S.B. 1), Sec. 67.01, eff. September 28, 2011. SUBCHAPTER R. STATEWIDE OPIOID SETTLEMENT AGREEMENT