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Canada’s retaliatory tariffs on U.S. took effect on Tuesday, putting billions of dollars' worth of goods and the exports of dozens of states at risk in the latest chapter of the trade war between the historic allies.

Sept 10 (Reuters) - The steep premium paid for aluminum in the U.S. will not drop significantly even if Washington halves the tariffs on metal from neighboring Canada, because imports from other countries will still be needed,

Canada's new retaliatory tariffs against the U.S. are in effect as of Tuesday, Sept. 8. Canadian leaders are warning their residents that the move will come at a cost, but the alternative would be worse.

The Maine senator faces a tough reelection bid in one of the states most affected by Trump’s trade war with the northern neighbor.

President Donald Trump’s latest trade maneuver leaves the door open to compromise with Canada, even as it threatens to exacerbate the cost-of-living crisis for Americans and further sour relations with Ottawa.

Ottawa matched U.S. Section 338 duties dollar for dollar, hitting steel, dairy, electronics, and furniture with rates up to 50%

The tariffs are legally vulnerable, and many businesses are hurt by them. There’s an opportunity for a brave plaintiff.

Canada is rolling out a flurry of new tariffs on US goods on Tuesday morning, adding levies of up to 50% on items like dairy and steel.

President Trump’s levies on a long, eclectic list of products from Canada has companies scrambling to figure out of their supply chains are affected.