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U.S. law enforcement efforts

U.S. law enforcement agencies have targeted chemical brokers and foreign companies to interrupt the fentanyl precursor supply chain.

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Jan 29, 2026

How did China’s 2023 precursor chemical crackdown change fentanyl trafficking to Mexico and the U.S.?

’s 2023 crackdown on -related substances and precursor chemicals coincided with—and helped accelerate—a long-running shift in the illicit supply chain: traffickers moved from shipping finished fentany...