President Donald Trump has signed an order to impose stiff tariffs on imports from Mexico, Canada and China, drawing swift retaliation from the U.S.’s North American neighbors in an emerging trade war.

President Trump announced sweeping tariffs on goods imported from Mexico, Canada and China, triggering a trade war and raising fears about consumer costs.

Ties between the United States and Mexico have deepened over 30 years of free trade, creating both benefits and irritants.