In James v. City of Costa Mesa, published May 21, 2012, a divided 9th Circuit panel concluded that Title II of the ADA, which prohibits discrimination against the disabled in providing public services, does not provide a ground for challenging a city's exclusion of medical marijuana dispensaries from its borders. Although the ADA protects persons with disabilities, the Act excludes from its definition of persons with disabilities persons who use illegal drugs, when the challenged activity is based on the use of those drugs. Although California state law permits the use of marijuana for medical purposes, federal law does not. The majority interpreted the ADA to define illegal drug use by reference to federal, rather than state, law. Congressional action allowing the District of Columbia to implement a medical marijuana initiative did not change that conclusion.
One judge concurred in part and dissented in part. She considered the statutory interpretation close, and concluded that the ADA protects use of medical marijuana in California. She did not, however, rule out the possibility that the ADA does not protect distribution of medical marijuana; and would have remanded the case for consideration of that issue.