President Donald Trump approved the merger of U.S. Steel with Japan’s Nippon Steel, calling it a partnership. Shares surged as the executive order allowed the deal to proceed, contingent on a national security agreement granting the U.S. government certain veto powers. The agreement includes a golden share, giving the government control over decisions like relocating headquarters or closing plants. U.S. Steel will become a wholly owned subsidiary of Nippon Steel North America, emphasizing collaboration between the companies.