Declaring a national emergency relating to China-based chemical companies that contributed to the opioid crisis in the United States, and, under the International Emergency Economic Powers Act, imposing an additional 10% tariff on Chinese goods for consumption.
https://www.federalregister.gov/documents/2025/02/07/2025-02408/imposing-duties-to-address-the-synthetic-opioid-supply-chain-in-the-peoples-republic-of-china