A Win for the Good Guys

From Montana:

In 2016, the City of Missoula, a self-governing municipality, adopted Ordinance 3581, which imposed a requirement upon persons purchasing or otherwise receiving a firearm in the City to pass a national instant background check. The Attorney General issued an opinion concluding that cities with self-government powers were prohibited by Montana law from enforcing a local regulation or ordinance requiring background checks of firearm sales or transfers. The City filed this action challenging the Attorney General's opinion and seeking a declaration that the ordinance was lawful. The district court concluded that the ordinance was authorized under the statutory exception in Mont. Code Ann. 45-8-351(2) and entered summary judgment for the City. The Supreme Court reversed, holding that the express statutory prohibition upon cities in section 45-8-351(1) is a limitation on the City's self-governing powers.