President Donald Trump announced he would double tariffs on steel imported to the U.S. from 25% of 50%, effective June 4.

The president said the change would "secure the steel industry in the United States," helping protect the jobs of domestic steel and aluminum workers.

President Trump announced the change during a speech at U.S. Steel’s Mon Valley Works–Irvin Plant in West Mifflin, Pennsylvania. He was attending to commemorate a deal in which Japan-based Nippon Steel is expected to make a new investment in U.S. Steel.

“The strong steel industry is not just a matter of dignity or prosperity or pride,” President Trump said. “It’s, above all, a matter of national security.”

The official details of the deal between Nippon Steel and U.S. Steel have not yet been announced. President Trump

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