Establishes provisions regulating the display of flags at public buildings

HB 3315 regulates flag displays on Missouri public buildings operated by state or local governments, such as courthouses, city halls, and schools. It permits only 12 specific flags, including the U.S. flag, Missouri state flag, military branch flags, federally recognized tribal flags, and school flags, while prohibiting all other flags. The state auditor investigates violations, gives government entities three days to correct issues, and can seek a court injunction for removal if unresolved, with courts required to act within seven days. The law does not restrict flags displayed by individuals lawfully present on public property.