Proposes a constitutional amendment relating to firearms

HJR 156 proposes amending Missouri's state constitution to protect the right to keep and bear arms, repealing the current Section 23 and replacing it with new language. The amendment guarantees this right for self-defense and requires any restrictions to undergo "strict scrutiny," while explicitly allowing local governments (counties, St. Louis, Kansas City) to create their own firearm ordinances. Key provisions include limiting local permit fees to actual costs, requiring permits to expire after five years, recognizing permits from other jurisdictions, and exempting active law enforcement, judges, and certain security personnel. The bill does not override federal law or the Second Amendment but permits local rules subject to these specific constraints.