.Biden readying to shut out Nippon Steel investment of USA Steel The Washington PostU.S. Steel mentions it could possibly leave behind Pittsburgh if Nippon bargain flops as Biden considers to block requisition Pittsburgh Post-GazetteBiden Expected to Block United State Steel Requisition The The Big Apple TimesExclusive|U.S. Steel Portend Vegetation Closings if Purchase Breaks Down The Wall Street JournalBiden prepped to block US Steel acquisition by Nippon Steel CNN.