Trump says will 'block' Nippon Steel from taking over US Steel      

FILE - The United States Steel Mon Valley Works Clairton Plant is in Clairton, Pennsylvania, on Sunday, Oct. 13, 2024. FILE - A rally by U.S. Steel employees is held outside the United Steel Tower in downtown Pittsburgh to display their support for the transaction with Nippon Steel, Sept. 4, 2024.

U.S. President-elect Donald Trump on Monday said he would "block" a planned takeover of US Steel by Japanese company Nippon Steel, a deal worth $14.9 billion including debts.