Modifies provisions relating to sports complex authorities

HB 1491 creates a new type of county authority in Missouri for managing sports, convention, and exhibition facilities, specifically targeting counties with 230,000-260,000 residents. It establishes a five-member commission appointed by the governor (with party balance limits) to oversee the authority, which can develop or operate facilities but cannot replace existing county or municipal authority. Counties must create a separate "Convention and Sports Complex Fund" and contribute $3 million annually before qualifying for state matching funds (up to $3 million yearly), contingent on securing a lease with a major professional sports team (NFL, NBA, NHL, or MLB) after 2026. The bill requires annual reporting and biennial audits of the fund’s finances, with state funds flowing for up to 40 years once county contributions begin.