U.S. President Donald Trump said he will formally announce 25 percent tariffs on all steel and aluminum imports on Monday, including for Canada and Mexico.

Trump imposed steel and aluminum tariffs at 25 and 10 percent respectively during his first term in March 2018 using national security as justification.

Border issues remain the official justification for threatening tariffs, according to the executive order.

On February 3, both Canada and Mexico were granted at least 30 days reprieve from the threat being realized after both Trudeau and Mexican president Claudia Sheinbaum talked to Trump about their respective border plans.

Canada’s plan includes $1.3 billion in spending, first announced in December, on enhanced border security, including patrols with helicopters, and the creation of a “fentanyl czar”, who will work with U.S. counterparts in combating the toxic drug crisis.