.Biden prepping to shut out Nippon Steel investment of U.S. Steel The Washington PostU.S. Steel states it can leave Pittsburgh if Nippon package falls through as Biden prepares to shut out takeover Pittsburgh Post-GazetteBiden Expected to Block United State Steel Takeover The New York TimesExclusive|United State Steel Portend Vegetation Closings if Purchase Falls Down The Wall Street JournalBiden prepared to block out US Steel investment through Nippon Steel CNN.