.Biden preparing to shut out Nippon Steel acquisition of USA Steel The Washington PostU.S. Steel mentions it could possibly leave Pittsburgh if Nippon bargain flops as Biden plans to obstruct takeover Pittsburgh Post-GazetteBiden Expected to Block U.S. Steel Takeover The New York TimesExclusive|United State Steel Warns of Plant Closings if Sale Collapses The Exchange JournalBiden prepared to shut out United States Steel acquisition through Nippon Steel CNN.