The president said the planned duties were a response to China’s failure to curb fentanyl exports. Protectionism (Trade), International Trade and World Market, Customs (Tariff), United States International Relations, United States-Mexico-Canada Agreement, China, Canada, Mexico, Trump, Donald J, United States Economy, United States Politics and Government The president said the planned duties were a response to China’s failure to curb fentanyl exports. NYT > Business