Mo. Rev. Stat. § 135.204: Contingent effective date for certain sections.

The repeal and reenactment of sections 99.918, 99.1082, 135.205, 135.207, 135.230, 135.530, 135.903**, 135.953, 215.263, and 620.1023 of section A of this act*** shall become effective on April 1, 2011, or when the United States Census Bureau's American Community Survey, based on the most recent of five-year period estimate data in which the final year of the estimate period ends in zero becomes available, which first occurs. The commissioner of the office of administration shall notify the revisor of statutes when the updated United States Census Bureau data has been released.