WASHINGTON (AP) -- The Trump administration is announcing tariffs on steel and aluminum imports from the European Union, Canada and Mexico. The move is sure to raise worries of a trade war with American allies.

Commerce Secretary Wilbur Ross says there will be a 25 percent tariff on imported steel and a 10 percent tariff on imported aluminum.

President Donald Trump announced the tariffs in March but the U.S. granted exemptions to the E.U., Canada, Mexico and other U.S. allies.

Ross says talks with Canada and Mexico over the North American Free Trade Agreement are "taking longer than we had hoped." He says negotiations with Europe have "made some progress" but not enough to merit an exemption.

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