Mo. Rev. Stat. § 443.747

If any provision of sections 443.701 to 443.893 or their application to any person or circumstance is held invalid, the remainder of sections 443.701 to 443.893 or the application of the provision to other persons or circumstances is not affected. If the United States Department of Housing and Urban Development disapproves * in writing to the director of any provision of sections 443.701 to 443.893 under authority granted to it under Section 1508 of Public Law 110-289, Title V, the S.A.F.E. Act, the director may, in accordance with the director's rulemaking authority under sections 443.701 to 443.893 and chapter 536, adopt rules as necessary to participate or continue participation in the NMLSR.