Mexican and Canadian officials worked the phones and booked trips to Washington as time runs out to stave off President Donald Trump’s threat to impose 25% tariffs against the two largest US trading partners on Saturday.

The possibility of tariffs could trigger higher prices and potentially disrupt the energy, auto, lumber and agricultural sectors.

U.S. President Donald Trump is expected to announce new tariffs against Canada and Mexico that will begin on March 1, but will include a process for the countries to seek specific exemptions for certain imports,