The city of Berkeley filed a claim Wednesday against the federal government in response to U.S. Attorney Melinda Haag's attempts to shut down Berkeley Patients Group, Berkeley's largest medical marijuana dispensary. The original complaint, filed by Haag on May 2, threatened to confiscate the dispensary's assets for violating a federal law prohibiting drug sales within 1,000 feet of schools. Its landlord faces felony charges for allowing the dispensary to exist near a preschool, a violation of federal but not state or city law. [continues 466 words]