In spring 2011 the Montana Legislature replaced the state’s voter-approved medical marijuana law with Senate Bill 423, a far stricter law that limited each provider to three patients, while federal agents raided dispensaries across the state. The rollback cut the patient registry from about 31,000 people to under 10,000 and was upheld by voters in 2012, until Initiative 182 restored broad access in November 2016. The fight was the subject of the 2012 documentary Code of the West.
What Happened
Montana voters legalized medical marijuana in 2004 with Initiative 148, which passed 276,042 to 170,579, or about 62% (Ballotpedia). The program stayed small for years. Then storefronts and traveling “cannabis caravans” signed up thousands of patients, and the registry grew from about 2,000 cardholders in March 2009 to roughly 31,000 by May 2011, according to Associated Press figures reported by the Missoulian.
The 2011 Legislature first passed House Bill 161, an outright repeal of I-148. Governor Brian Schweitzer vetoed it (Ballotpedia). Lawmakers then passed SB 423, which became law in May 2011. It kept medical marijuana legal on paper but rebuilt the program around tight limits: a provider could serve no more than three registered patients and could not be paid for it, physicians who certified many patients faced review, and law enforcement could inspect provider sites. Patient advocates called it a repeal in disguise.
The federal government moved at the same time. On March 14, 2011, federal agents served search warrants at 26 homes, offices and businesses tied to medical marijuana. By January 2012, the U.S. Attorney’s office said, more than 25 people had been indicted and 12 sentenced (Havre Daily News, AP). One of them, Montana Cannabis co-founder Richard Flor, was sentenced to five years. He died in federal custody on August 29, 2012, at age 68, while being moved to a prison medical facility (The Nation).
The Documentary and the Court Fight
Code of the West, directed by Rebecca Richman Cohen, followed the repeal campaign at the Capitol in Helena and premiered at the South by Southwest festival on March 11, 2012 (Wikipedia). It then screened at festivals and community events around the country, which is when The Weed Street Journal first wrote about it.
The Montana Cannabis Industry Association sued. In late June 2011, just before SB 423 took effect, District Judge James Reynolds of Helena blocked several provisions, including the ban on providers being paid. On September 11, 2012, the Montana Supreme Court reversed that injunction 6 to 1, holding that patients have no fundamental right to use marijuana (2012 MT 201; NORML).
What Happened Next
Activists gathered signatures in 2011 to refer SB 423 to the voters as Initiative Referendum 124. The strategy backfired. In November 2012, Montanans approved SB 423, 268,790 to 200,730, or 57% (Ballotpedia).
The case returned to the Montana Supreme Court. On February 25, 2016, in an opinion by Chief Justice Mike McGrath, the court upheld the three-patient limit and most of the law (2016 MT 44). It later delayed enforcement until August 31, 2016, citing the disruption to patients (AP via Explore Big Sky). The registry had already shrunk to just over 9,000 patients by November 2014, the AP reported.
Voters reversed course on November 8, 2016. Initiative 182 passed with 291,334 votes, about 58%. According to the official ballot language, it repealed the three-patient limit, let providers hire staff, added PTSD as a qualifying condition, ended the automatic referral of doctors who certified 25 or more patients a year, replaced unannounced police inspections with annual state inspections, and set up licensing for dispensaries and testing labs.
Where It Stands in 2026
Four years later Montana went further. Initiative 190 legalized adult use in November 2020 with about 57% of the vote, and licensed adult-use sales began January 1, 2022. The medical program still exists alongside it. For current possession limits, taxes and county rules, see our Montana marijuana laws guide. For the federal side, including the 2026 move of state-licensed medical marijuana to Schedule III, see federal marijuana laws. More stories like this one are collected in our marijuana history section.
Montana SB 423 FAQ
What was Montana SB 423?
SB 423 was the 2011 law that replaced Montana’s 2004 medical marijuana initiative. It kept medical use legal but limited each provider to three patients, barred providers from being paid, and added inspections and doctor reviews.
Did voters approve SB 423?
Yes. Opponents forced a referendum, IR-124, but in November 2012 voters approved the law with about 57% of the vote.
What did Initiative 182 change?
Passed in November 2016, I-182 repealed the three-patient limit, added PTSD as a qualifying condition, let providers hire employees and created licensing for dispensaries and testing labs.
What is Code of the West about?
It is a 2012 documentary by Rebecca Richman Cohen about the 2011 campaign in the Montana Legislature to repeal and restrict the state’s medical marijuana law.
Is marijuana legal in Montana now?
Yes. Adults 21 and older have been allowed to possess marijuana since 2021 under Initiative 190, and licensed stores opened in 2022.
Originally reported by The Weed Street Journal; rewritten and updated in October 2026 with what happened next.
