Marijuana Law and Policy is a first-of-its-kind law school casebook in a rapidly-emerging and exciting new field. The accessible, comprehensive, and engaging material guides students through the competing approaches to regulating marijuana, the purposes and effects of those approaches, and the legal authorities for choosing among them. The helpful organization intersperses these issues of substantive law, policy, and authority throughout the discussion of users, suppliers, and third parties. Substantive law materials cover either prohibitions or regulations targeting users, suppliers, or third parties. Policy materials cover the goals of marijuana law and policy as well as the research on the impact of different marijuana policies. Authority materials address the different levels of government—federal, state, and local. Notes, questions, and numerous problems in each chapter provide additional thought-provoking material and help to reinforce student learning. Current, news-headlining cases keep the discussion interesting and lively.