Production— No provision of the Controlled Substances Act (
21 U.S.C. 801 et. seq.) or of the Federal Food, Drug, and Cosmetic Act (
21 U.S.C. 301 et seq.) shall prohibit or otherwise restrict an entity authorized by a State, in which marihuana may be prescribed by a physician for medical use, for the purpose of producing marihuana for prescription by a physician for medical use, from producing, processing, or distributing marihuana for such purpose.