Carney says US trade war 'will come at a cost' as Canada strikes back on tariffs - BBC News

As high as 50%, Canada's levies will apply to nearly $20bn of US products, from steel to T-shirts.

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Watch: How much can Canada fight back in its trade war with the US?

Prime Minister Mark Carney said that Canada's pivot away from the US as its largest trading partner "will come at a cost", as a wave of Canadian retaliatory tariffs on American goods come into force.

In a video address, Carney added that the counter-tariffs against the US "are necessary to protect our workers".

Canada's levies will apply to nearly C$28bn ($20bn; £15bn) of American products, from steel to furniture to cotton T-shirts, and will be as high as 50%.