Administration officials secured a deal that will give the president unusual influence over a private company, and could serve as a model for other deals.

President Donald Trump on Friday signed an executive order paving the way for a Nippon Steel investment in U.S. Steel, so long as the Japanese company complies with a "national security agreement" submitted by the federal government.

His approval capped a tumultuous 18-month effort that survived union opposition and two national security reviews.