; and (B) by adding at the end the following: (B) Cannabidiol— (i) is excluded from the definition of marihuana under subparagraph (A); and (ii) shall not be treated as a controlled substance under this Act. . (2) Definition Section 102 of the Controlled Substances Act ( 21 U.S.C. 802 ), as amended by paragraph (1), is further amended by adding at the end the following: (57) The term cannabidiol means the substance cannabidiol, as derived from marihuana or synthetically formulated, that contains not greater than 0.3 percent delta-9-tetrahydrocannabinol on a dry weight basis. . (3) Cannabidiol determination by the States Section 201 of the Controlled Substances Act ( 21 U.S.C. 811 ) is amended by adding at the end the following: (j) Cannabidiol determination If a person grows or processes marihuana for purposes of making cannabidiol in accordance with State law, the marihuana shall be deemed to meet the concentration limitation under section 102(57), unless the Attorney General determines that the State law is not reasonably calculated to ensure that marihuana grown or processed for purposes of making cannabidiol meets such concentration limitation. . (c) Regulation under State law (1) In general In a State in which marihuana may be prescribed by a physician for medical use under applicable State law, 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 in such State in accordance with such State law— (A) the prescription of marihuana by a physician for medical use; (B) an authorized patient under such State law from obtaining, possessing, transporting, or using marihuana for that patient’s medical use; (C) a caregiver for an authorized patient from obtaining, possessing, or transporting marihuana, as authorized under such State law, for the medical use of such authorized patient