From the executive summary: "The 2018 National Drug Threat Assessment (NDTA) is a comprehensive strategic assessment of the threat posed to the United States by domestic and international drug trafficking and the abuse of illicit drugs. The report combines federal, state, local, and tribal law enforcement reporting; public health data; open source reporting; and intelligence from other government agencies to determine which substances and criminal organizations represent the greatest threat to the United States. Illicit drugs, as well as the transnational and domestic criminal organizations who traffic them, continue to represent significant threats to public health, law enforcement, and national security in the United States. Drug poisoning deaths are the leading cause of injury death in the United States; they are currently at their highest ever recorded level and, every year since 2011, have outnumbered deaths by firearms, motor vehicle crashes, suicide, and homicide."
DEA-DCT-DIR-032-18; Drug Enforcement Administration-DCT-DIR-032-18
Drug Enforcement Administration: https://www.dea.gov/