President Donald Trump imposed sweeping 25% tariffs on all steel and aluminum imported into the United States Wednesday, a policy aimed at leveling the playing field for US manufacturing but a move that threatens to drive up prices on a broad range of consumer and industrial goods for Americans.

New U.S. tariffs on Canadian steel and aluminum went into effect Wednesday as a trade war between the two North American neighbours escalates. U.S. President Donald Trump had on Tuesday threatened to double the planned metal tariffs to 50 per cent in response to Ontario’s decision to impose a 25 per cent surcharge on electricity exports to the U.