Canada has announced counter-tariffs as high as 50% on a range of US goods in retaliation to the latest wave of levies on Canadian imports imposed by President Donald Trump last weekend.

Canada has announced retaliatory tariffs against American goods worth about $20 billion amid an escalating trade war.

The White House said Canada's protectionist barriers, including auto quotas, alcohol restrictions and dairy barriers, had cost American producers billions of dollars in lost sales, forced layoffs and ...