Trump’s 50% tariffs on $20 billion worth of Canadian goods have triggered a sharp response from Ottawa, with Prime Minister Mark Carney announcing retaliatory measures. Canada says it will match the US tariffs dollar-for-dollar as tensions between Washington and Ottawa escalate. Watch the latest live developments as Trump and Carney face off in a rapidly intensifying US-Canada trade war.

Canada's PM Mark Carney announces retaliatory tariffs on steel, dairy, electronics and more, matching US duties dollar for dollar after trade

Carney said Saturday that Canada will impose retaliatory tariffs on U.S. goods starting Sept. 8.