U.S. President Donald Trump has pledged to place 25% tariffs on imports from Mexico and Canada from Feb. 1 if the two countries are not judged to be doing enough to stop the flow of fentanyl into the United States.

President Donald Trump’s pick to lead the Commerce Department said Mexico and Canada can avoid new tariffs due this weekend if they clamp down on border security — while also signaling that Trump is likely to impose widespread new levies to return manufacturing to US soil.

General Motors, the largest producer of cars in Mexico, won’t provide details on how it would react if President Trump imposes 25 percent tariffs from the two countries.