Dossier
precursor chemicals
Coverage of precursor chemicals in the Nexus archive.
- Why China’s Chemical Curbs Barely Dent Mexico’s Fentanyl Supply
China requires export licenses for 16 precursor chemicals heading to North America, including 13 added in November and three after a May summit. The measures followed trade deals between Washington and Beijing that linked tariff relief to drug cooperation. Analysts suggest most chemicals still reach Mexican fentanyl operations.