.Biden readying to shut out Nippon Steel acquisition of USA Steel The Washington PostU.S. Steel states it can leave Pittsburgh if Nippon package falls through as Biden plans to block requisition Pittsburgh Post-GazetteBiden Expected to Block United State Steel Takeover The New York City TimesExclusive|USA Steel Portend Vegetation Closings if Purchase Collapses The Commercial JournalBiden readied to shut out US Steel acquisition through Nippon Steel CNN.