.Biden preparing to shut out Nippon Steel investment of USA Steel The Washington PostU.S. Steel says it could leave Pittsburgh if Nippon package falls through as Biden considers to block requisition Pittsburgh Post-GazetteBiden Expected to Block USA Steel Takeover The New York TimesExclusive|United State Steel Portend Vegetation Closings if Sale Breaks Down The Stock market JournalBiden prepped to block United States Steel investment by Nippon Steel CNN.