Congress removed hemp from the Controlled Substances Act when it defined and excluded hemp from the definition of “marihuana” with the signing of the 2018 Farm Bill on December 20, 2018.

21 U.S.C.
§802. Definitions

(16)(A) Subject to subparagraph (B), the term “marihuana” means all parts of the plant Cannabis sativa L., whether growing or not; the seeds thereof; the resin extracted from any part of such plant; and every compound, manufacture, salt, derivative, mixture, or preparation of such plant, its seeds or resin.

(B) The term “marihuana” does not include-

(i) hemp, as defined in section 1639o of title 7; or

(ii) the mature stalks of such plant, fiber produced from such stalks, oil or cake made from the seeds of such plant, any other compound, manufacture, salt, derivative, mixture, or preparation of such mature stalks (except the resin extracted therefrom), fiber, oil, or cake, or the sterilized seed of such plant which is incapable of germination.