.Biden prepping to block out Nippon Steel purchase of U.S. Steel The Washington PostU.S. Steel states it can leave behind Pittsburgh if Nippon package falls through as Biden organizes to shut out takeover Pittsburgh Post-GazetteBiden Expected to Block U.S. Steel Takeover The The Big Apple TimesExclusive|USA Steel Portend Vegetation Closings if Purchase Falls Down The Stock market JournalBiden prepared to shut out US Steel acquisition by Nippon Steel CNN.