The U.S. Supreme Court has been asked to decide whether states can limit cannabis business licenses to their own residents. A petition filed on September 10, 2026, in Peridot Tree WA, Inc. v. Washington State Liquor and Cannabis Control Board (No. 26-343) was docketed on September 15. The Court has not yet agreed to hear the case, and the states have until December 4, 2026, to respond.
The question matters because many state cannabis programs favor local applicants. If the justices take the case and rule against residency rules, the decision could reshape how states license dispensaries, growers and other operators.
What the petition asks the Court to decide
The petitioners challenge residency requirements for cannabis operator licenses. They argue that such rules violate the dormant Commerce Clause, the constitutional doctrine that limits states from favoring in-state economic interests over out-of-state ones. According to CRB Monitor’s reporting, the filing presents the issue as a pure question of law.
The case comes from the Ninth Circuit, which handled the appeals under case numbers 24-3481 and 24-7196. Per the Supreme Court docket, the Ninth Circuit’s decision is dated January 2, 2026, and rehearing was denied on April 13, 2026. CRB Monitor reports that the appeals court reasoned the doctrine does not block these rules because cannabis remains illegal under federal law.
Key dates in the case
- January 2, 2026: Ninth Circuit decision.
- April 13, 2026: Rehearing denied.
- June 4, 2026: Justice Elena Kagan extends the filing deadline to September 10.
- September 10, 2026: Petition for a writ of certiorari filed.
- September 15, 2026: Case docketed.
- December 4, 2026: Responses now due, after extensions granted in early October.
The respondents listed on the docket include the Washington State Liquor and Cannabis Control Board, represented by the Washington Attorney General’s Office, and the City of Sacramento and an individual, Davina Smith.
Why courts disagree on cannabis residency rules
Lower courts have not spoken with one voice. In 2022 the First Circuit found that Maine’s residency requirement for medical cannabis operators was unconstitutional, a ruling covered by Reason. The Ninth Circuit has now gone the other way in the Washington case. CRB Monitor also reports a 2025 Second Circuit decision applying the doctrine to cannabis licensing.
The Supreme Court has passed on related cases before. In February 2026 it declined to hear Jensen v. Maryland Cannabis Administration, a challenge to Maryland’s social equity program, according to Duane Morris. The Fourth Circuit had ruled for Maryland without deciding the residency question, so that case differed from this one.
What this means for the cannabis industry
Residency rules are one reason many state markets are walled off from outside investors and operators. A ruling striking them down could open licensing to out-of-state applicants. Attorney Vince Sliwoski of Harris Sliwoski said, as relayed by CRB Monitor, that a win for the petitioners could also affect other restrictions, such as rules about who may buy medical marijuana or grow plants at home, and that the analysis would still apply if cannabis were moved to Schedule III.
It is important to keep the limits in view. Docketing a petition is not the same as granting review. The Court accepts only a small share of petitions, and nothing on the docket shows the justices have taken any action on the merits. CRB Monitor notes that these petitions typically take two to five months to resolve.
What happens next
- The respondents’ briefs are due December 4, 2026.
- The petitioners may then file a reply before the justices consider the petition.
- If the Court grants review, arguments would likely come in a later term. If it denies review, the Ninth Circuit ruling stands and the split among lower courts continues.
Readers can follow the case directly on the Supreme Court docket page.
Related coverage
For background on how licensing and legality vary by state, see our guides to cannabis laws in the United States and the state-by-state legalization overview. We also covered the federal rescheduling hearing and the November 3 marijuana ballot measures.
Sources
- U.S. Supreme Court docket, No. 26-343
- CRB Monitor: Cannabis residency rules head to Supreme Court
- Duane Morris Cannabis Blog
- Reason: First Circuit on Maine’s residency rule
