.Biden preparing to shut out Nippon Steel acquisition of USA Steel The Washington PostU.S. Steel says it could possibly leave Pittsburgh if Nippon deal fails as Biden plans to shut out requisition Pittsburgh Post-GazetteBiden Expected to Block U.S. Steel Requisition The Nyc TimesExclusive|United State Steel Portend Vegetation Closings if Purchase Breaks Down The Stock market JournalBiden prepared to shut out United States Steel acquisition by Nippon Steel CNN.