(The Center Square) – President Donald Trump said Monday he would impose 50% tariffs on all Canadian cars, trucks, auto parts and steel on Jan. 1 as leaders in Ottawa vowed to retaliate against the U.S. import taxes.

The move deepens a trade war that escalated over the weekend. Trump's earlier 50% tariffs, which took effect Saturday on a range of Canadian goods including wine, cheese, cement and electronics, largely exempted autos and steel.

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