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.

Canada is also pushing to diversify its exports and set itself a target in 2018 of increasing non-U.S. exports by 50% by 2025.

The president, who has threatened and delayed other tariffs, said he will announce the new measures Monday. Canada and Mexico are among the U.S.’s top steel suppliers.