President Donald Trump signed an order to put tariffs on U.S. neighbors Canada and Mexico, as well as China, starting Tuesday.

The 25% tax that President Donald Trump plans to slap as soon as Saturday on imports from Canada and Mexico could drive up the price of everything from gasoline to pickup trucks to the guacamole dip that features so prominently at American Super Bowl parties.

President-elect Donald Trump is threatening to add the 27 countries that make up the European Union to the list of trade partners he'll place tariffs on — unless the group takes steps to import more U.S. goods.