U.S. Steel shares jumped on Monday after President Donald Trump approved its controversial merger with Japan’s Nippon Steel. U.S. Steel shares were last up about 5% in premarket trading. Trump issued an executive order on Friday that allowed U.S. Steel and Nippon to finalize their merger so long as they signed a national security agreement with the U.S. government. The companies said they signed the agreement with the government, completing the final hurdle for the deal. U.S. Steel said Friday that the national security agreement includes a golden share for the U.S government, without specifying what powers the ... (full story)