The Trump administration's decision to secure a golden share in U.S. Steel as part of Nippon Steel's acquisition has raised concerns among foreign investors. The share grants the U.S. government veto power over key decisions,

U.S. Steel and Japan's Nippon Steel said Trump had approved their merger after they signed a national security agreement with the U.S. government.

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.