Mexico, Canada and the European Union on Tuesday condemned U.S. President Donald Trump's decision to impose tariffs on all steel and aluminum imports next month, a move that has fanned fears of a trade war as business and political leaders braced for yet more trade duty announcements from the new administration.

President Donald Trump signed an order Monday imposing global tariffs of 25% on all steel and aluminum imports, likely pleasing domestic steelmakers but hurting allies like Canada and Mexico.

Mexico's government is questioning the fairness of a 25% tariff imposed by the U.S. on its steel and aluminum imports. Mexican Economy Minister Marcelo Ebrard argues the tariffs are unjustified, given the U.