President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE on Thursday will sign a directive calling for an investigation into whether foreign-made steel imports are harming national security, Reuters reported late Wednesday.

The memo Trump will sign at the White House cites a law allowing the president to impose restrictions on imports for national security reasons, the report said. Commerce Secretary Wilbur Ross launched the probe late Wednesday.

Trump’s directive will reportedly ask Ross to conduct it “with all deliberate speed and deliver the results to the president with his recommendations."

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The move is based on a concern that imported steel alloys used in products like the armor plating of ships require expertise to create and produce that foreign companies may not have, the report said. It added that the memo is not intended to affect any one particular company.

Trump frequently pledged during the campaign to put in place policies encouraging companies to “buy American” products and “hire American” workers to grow the economy.