On a visit to a U.S. Steel plant in Pennsylvania on Friday, Mr. Trump said he would double to 50 percent the tariffs he had imposed on foreign steel and aluminum earlier this year, effective June 4.
A court ruling invalidating President Trump’s sweeping tariffs was halted hours later, throwing into question the administration’s overall approach to trade.
Using tariffs to pressure foreign countries to drop their own levies and to remove other barriers to U.S. exports has been one of President Trump’s main tactics.