Trump escalates trade war; doubles tariffs on Canada steel, aluminum
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The US leader acts after Ontario's premier adds a 25% tax on electricity it sends to three US states

U.S. President Donald Trump ramped up his trade war with Canada on Tuesday, doubling the 25% U.S. tariff on its northern neighbor’s steel and aluminum exports to 50% after Canada’s Ontario provincial leader said he is adding a 25% levy on electricity sold to 1.5 million American customers.