The Michigan Supreme Court has heard arguments about a Grand Rapid suburb's efforts to ban medical marijuana, even though it's legal under state law.
The court held a hearing Thursday on a challenge to the law that the city of Wyoming adopted in 2010 ordinance.
The law bars activities that conflict with federal law. Those activities would include growing or possessing marijuana.
Wyoming is appealing a decision that struck down the ordinance.
The American Civil Liberties Union represents Wyoming resident John Ter Beek, who's registered to use medical marijuana.
ACLU lawyer Daniel Korobkin says the case has "far-reaching implications" for Michigan and patients who use marijuana.
An association of Michigan prosecutors is supporting the city. A handful of other communities have similar laws.