ACLU:  “The American Civil Liberties Union today [May 27, 2011] agreed to represent the Arizona Medical Marijuana Association (AzMMA) in order to defend the constitutionality of Arizona’s medical marijuana law. . . . Three appellate decisions in California have previously rejected claims that California’s medical marijuana law is preempted by federal law. And earlier this month the Oregon Supreme Court backed away from its previous ruling that a part of Oregon’s medical marijuana law is preempted by federal law.  ‘Contrary to the governor’s claims, the federal Controlled Substances Act includes an explicit provision permitting states to adopt their own drug laws,” said Scott Michelman, staff attorney with the ACLU Criminal Law Reform Project’.”