From the Scope and Methodology: "The '2020 National Drug Threat Assessment (NDTA)' is a comprehensive assessment of the threat posed to the United States by the trafficking and abuse of illicit drugs, the diversion and abuse of licit drugs, and the laundering of proceeds generated through illicit drug sales. It also addresses the role domestic groups, including organized violent gangs, serve in domestic drug trafficking. The most widely trafficked drugs are discussed in terms of their availability, consumption and overdose related deaths, production and cultivation, transportation, and distribution. The report provides strategic analysis of the domestic drug situation during 2019 and the first half of 2020. This assessment is prepared through detailed analysis of the most recent law enforcement, intelligence, and public health data available to counterdrug agencies through the date of publication."
U.S. Drug Enforcement Administration: https://www.dea.gov/