Prohibits certain offenders from being five hundred feet of any Missouri state park

HB 312 prohibits individuals convicted of specific sex crimes against children (such as child sexual exploitation, possession of child pornography, or similar offenses from other jurisdictions) from being within 500 feet of Missouri state parks, playgrounds, public pools, athletic fields for children, children's museums, or Missouri Department of Conservation nature centers. Violating this restriction is a felony, with first offenses classified as class E and repeat offenses as class D. The bill includes an exception allowing parents or guardians to be present at conservation nature centers during children's programs with facility manager permission. It directly affects individuals with these specific convictions, focusing on preventing proximity to locations where children gather for recreation or education.