.Biden readying to shut out Nippon Steel investment of USA Steel The Washington PostU.S. Steel says it might leave behind Pittsburgh if Nippon offer falls through as Biden plans to obstruct requisition Pittsburgh Post-GazetteBiden Expected to Block United State Steel Takeover The The Big Apple TimesExclusive|U.S. Steel Warns of Plant Closings if Purchase Breaks Down The Commercial JournalBiden prepped to shut out US Steel investment through Nippon Steel CNN.