Canada is preparing to retaliate with an exhaustive list of tariffs on American goods if President-elect Trump follows through with his plans to add a steep 25% import tax on Canadian exports, people familiar with the matter told CNN.

Donald Trump said this week he will use economic coercion to pressure Canada to become the nation’s 51st state.

Canada imported $320 billion in U.S. goods in the first 11 months of 2024, nearly equaling the European Union’s $341 billion. A U.S. 25% tariff could reduce Canada’s GDP by up to 3.8%, with retaliatory tariffs amplifying the impact to as much as 5.