Missouri Municipal Courts Still Enforce Pre-Legalization Marijuana Cases

State Expungement Statute Doesn't Bind Municipal Courts

Missouri's automatic expungement provision in Article XIV applies only to state criminal records, leaving municipal ordinance violations untouched. The constitutional amendment voters approved in November 2022 directed the Department of Corrections and state courts to expunge qualifying convictions by June 2023. Municipal courts operate under separate statutory authority and aren't party to that mandate.

More than 600 municipalities in Missouri enforce local cannabis ordinances that mirror but don't replicate state statutes. Those jurisdictions retain independent discretion. They decide case disposition, fine collection, and warrant issuance on their own terms.

Outstanding Warrants Accumulate Interest and Penalties

Municipal fines for pre-legalization possession charges compound with late fees, court costs, and warrant surcharges that can exceed the original citation amount. A $200 possession ticket issued in 2020 can balloon to $600 or more when collection fees and failure-to-appear penalties attach.

Warrants remain active in the Missouri Uniform Law Enforcement System (MULES) database. That means arrests during routine traffic stops. It means flags on employment background checks. No statewide audit of municipal marijuana warrants has been conducted since legalization took effect.

St. Louis County and Kansas City Lead in Unresolved Cases

St. Louis County municipal courts reported 4,800 open marijuana cases as of July 2026, according to county records reviewed by CannIntel. Kansas City municipal court data shows 2,100 unresolved possession citations predating the 2022 amendment.

The gap between state law and local enforcement creates a legal patchwork in which expungement depends on geography, not the offense itself.

Smaller jurisdictions such as Ferguson, Florissant, and Hazelwood haven't published case-dismissal policies or expungement protocols. Public defenders report clients routinely surprised to learn that state-level expungement didn't clear municipal dockets.

No Legislative Fix Proposed in 2026 Session

The Missouri General Assembly adjourned in May 2026 without addressing municipal marijuana enforcement. Not one bill requiring municipalities to dismiss or expunge pre-legalization cannabis cases advanced past committee.

State Senator Barbara Washington (D-Kansas City) filed SB 412 in January 2026 to mandate municipal expungement within 180 days of the bill's effective date. The measure died in the Senate Judiciary Committee without a hearing.

Advocates Push for Administrative Relief

Empower Missouri and the Missouri chapter of the ACLU have called on the attorney general to issue guidance directing municipalities to dismiss outstanding marijuana cases. Attorney General Andrew Bailey's office hasn't responded to those requests, according to correspondence obtained by CannIntel.

Some municipalities have acted unilaterally. Columbia dismissed all pending marijuana possession cases in March 2023, and St. Louis city dismissed 1,200 cases in August 2023. But those actions remain exceptions.

Expungement Petitions Require Legal Counsel and Fees

Individuals seeking municipal expungement must file case-by-case petitions, often requiring legal representation and filing fees that range from $50 to $250 per case. No public-defender resources are allocated to municipal expungement clinics in most counties.

The next legislative session begins in January 2027. Advocates expect renewed pressure for a statewide municipal expungement mandate, though passage remains uncertain in a legislature that narrowly opposed legalization in 2022. For now, the two-tier system persists. Thousands remain entangled in a legal framework the state has moved beyond.