In the 1930s, after the appointment of Henry J. Anslinger as the commissioner of the newly-established Narcotics Bureau, hemp cannabis was declared a narcotic and hemp farming was banned in the USA.
Nga vho 1930, hu tshi fhedza u nangiwa ha vho Henry J. Anslinger sa vhone mu commissioner wa zwe zwa vha zwi tshi khou fhedza u tumbuliwa zwa Narcotics Bureau, hemp cannabis ya mbo di pfi ndi narcotic na hone u tavhiwa ha hemp zwa mbo di iledzwa USA.