Cannabis Conundrum: Demonstrating “Accepted Medical Use” in a Restricted Research Environment By Delia Ann Deschaine and Megan Robertson U.S. cannabis businesses operate in an increasingly complex legal and regulatory environment. Many,… By hempcbdtimes , in 1961 Single Convention on Narcotic Drugs (the “Single Convention”) clinical research Congressional Research Service (CRS) Controlled Substance Act's Schedule 1 substances Drug Enforcement Administration (DEA) federal Multidisciplinary Association for Psychedelic Studies (MAPS) , at October 7, 2020