Nippon, US Steel file suit after Biden administration blocks $15 billion deal 

FILE - This is a portion of US Steel's Edgar Thomson Works in Braddock, Pa., Apr., 28, 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.

Japan’s Nippon Steel and U.S. Steel are filing a federal lawsuit challenging the Biden administration's decision to block a proposed nearly $15 billion deal for Nippon to acquire Pittsburgh-based U.S. Steel.