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Chinese manufacturers and brokers have become principal suppliers of precursors to Mexican cartels and global illicit markets, with a shift beginning in 2016 towards novel fentanyl analogs and precursor varieties
Maritime shipments of fentanyl precursor chemicals bound for North America are traced primarily to suppliers in China and, historically, India, moved through global maritime and parcel networks into M...
Since 2020 Mexican transnational criminal organizations (TCOs) have moved from importing finished fentanyl from abroad toward building a resilient, vertically integrated supply chain: buying precursor...
Independent and government investigations overwhelmingly point to Mexico as the principal site of illicit fentanyl production destined for the United States, while regional police and international re...
China and India have both tightened controls over fentanyl-related substances and precursors in recent years, with China implementing class-wide scheduling in 2019 and successive export licensing and ...
U.S. government and law‑enforcement reporting point to a networked supply chain in which precursor chemicals for illicit fentanyl and other synthetic opioids often originate in countries such as the P...
U.S. agencies determine the country of origin for seized fentanyl using a mix of chemical forensics, supply‑chain and shipping records, precursor chemical tracing, financial intelligence, and multinat...
Multiple strands of U.S. government reporting, academic analysis, and law‑enforcement assessments establish that Mexican transnational criminal organizations—most prominently the Sinaloa Cartel and th...