Brazil and Mexico, two top shippers of steel to the U.S., will wait to see if U.S. President Donald Trump announces tariffs on steel and aluminum imports before reacting, officials from both nations said on Monday.

Trump threatened Canadians with 25% tariffs on their products before granting them a one-month reprieve after a call with Prime Minister Justin Trudeau, who, in exchange, promised measures to contain human and fentanyl trafficking at the border.

President Donald Trump signed an order Monday imposing global tariffs of 25% on all steel and aluminum imports, likely pleasing domestic steelmakers but hurting allies like Canada and Mexico.