Missouri

Summary

Missouri has no enacted comprehensive AI-specific statute as of mid-2026. The sole AI-related provision that cleared the 2026 General Assembly is a prohibition on advertising AI systems as capable of providing therapy or mental health diagnosis, tucked into an omnibus health care bill (HCS/HB 2372) passed May 15, 2026, and awaiting gubernatorial signature with an August 28, 2026 effective date. All broader AI regulation bills — including a liability and disclosure framework (Sen. Nicola's bill), standalone mental health chatbot bills (SB 1444 / HB 2368), deepfake and synthetic-media bills, and the AI Non-Sentience and Responsibility Act (HB 1746 / HB 1769) — died at adjournment after stalling in committee under pressure from the Trump administration's directive that states defer to federal AI regulation and after concerns that state AI rules could jeopardize nearly $900 million in federal rural broadband funds. In the absence of AI-specific law, Missouri's primary consumer protection hook is the Missouri Merchandising Practices Act (RSMo Ch. 407), which the Attorney General can invoke against deceptive or unfair uses of AI in commerce, including misleading chatbot interactions and unsubstantiated AI capability claims.