President Trump’s sweeping tariffs on foreign steel and aluminum went into effect on Wednesday, escalating America’s trade spats with global competitors, including close allies already reeling from his on-and-off approach to trade penalties.
Mr. Trump’s tariffs of 25 percent on the metals hit imports that enter the United States from any country in the world. The move, which many domestic steel and aluminum makers support, is expected to raise costs for American manufacturers of cars, tin cans, solar panels and other products, potentially slowing the wider U.S. economy.
The action on metals was just the latest attempt by Mr. Trump to leverage the power of tariffs and the American market against foreign governments. Last week, he issued steep tariffs on imports from Canada, Mexico and China, blaming those countries for the entry of drugs and migrants into the United States, before quickly paring some of them back. The president is threatening to impose a raft of other tariffs, including on foreign cars and against countries that he says discriminate against the United States.
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