.Biden preparing to block out Nippon Steel acquisition of USA Steel The Washington PostU.S. Steel says it could possibly leave Pittsburgh if Nippon bargain fails as Biden prepares to block takeover Pittsburgh Post-GazetteBiden Expected to Block USA Steel Takeover The The Big Apple TimesExclusive|USA Steel Warns of Vegetation Closings if Sale Breaks Down The Wall Street JournalBiden prepared to block United States Steel acquisition by Nippon Steel CNN.