Ontario Premier Doug Ford said President Donald Trump launched an “unprovoked attack” on Canada when he increased steel and ...

Canada supplies half of US aluminium imports and 20 per cent of US steel imports. Trump announced that he would increase ...

Trump announced the new policies a day after Ontario slapped a 25% surcharge on electricity sent to the U.S., saying that he is adding another 25% tariff on Canadian steel and aluminum, bringing the ...

Ontario Premier Doug Ford's move to impose a surcharge on electricity flowing south of the border seems to have gotten the attention of U.S. President Donald Trump. Trump turned his sights on the new ...

President Donald Trump escalated his trade war with Canada on Tuesday, pledging to double his planned steel and aluminum ...

The US President Donald Trump says Canada can avoid higher taxes if they join the United States of America and become its ...

President Donald Trump on Tuesday threatened a sharp escalation in the budding trade war with Canada in retaliation for ...

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Ontario premier calls for talks amid new tariff edicts as U.S. president ties trade levies to interest in making Canada 51st ...

U.S. President Donald Trump said Canada will pay a "financial price" after vowing Tuesday to double the tariff on Canadian ...

Ontario Premier Doug Ford said that he would not “hesitate” to completely shut the electricity off if US President Donald Trump continues the trade war.

Yahoo Finance will chronicle the latest news and updates on Trump's tariffs — from the threats to the eventual policy.