.Biden readying to block out Nippon Steel investment of U.S. Steel The Washington PostU.S. Steel mentions it could possibly leave Pittsburgh if Nippon deal falls through as Biden considers to block requisition Pittsburgh Post-GazetteBiden Expected to Block U.S. Steel Takeover The The Big Apple TimesExclusive|USA Steel Warns of Vegetation Closings if Sale Collapses The Exchange JournalBiden prepared to block out United States Steel investment through Nippon Steel CNN.