U.S. President Donald Trump has threatened Canada – the U.S.’s largest seafood trading partner – with 35 percent tariffs, but an official later confirmed the higher rate may not apply to most seafood.

Glencore, the Swiss mining and metals trading giant that mines copper in Ontario and processes it in Quebec, both imports e-waste from the U.S. as feedstock for its smelter and also ships products to the U.S.