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 nominee for commerce secretary, billionaire financial-services executive Howard Lutnick, made an effort Wednesday to ease concerns about potentially inflationary 25% tariffs against Canada and Mexico that could hit Saturday.

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.