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.

U.S President Donald Trump approved Nippon Steel's $14.9 billion bid for U.S. Steel on Friday, capping a tumultuous 18-month effort by the companies that survived union opposition and two national security reviews.

The agreement with Nippon Steel is designed to resolve national-security concerns with the company’s planned acquisition of U.S. Steel.