By David Lawder, Dave Graham and Anthony Esposito WASHINGTON/MEXICO CITY (Reuters) – The United States on Wednesday requested dispute settlement consultations with Mexico under a regional trade deal over Mexican energy policies that it considers discriminatory and says “undermine” American firms and U.S.-produced energy. The request, announced by the U.S. Trade Representative’s office, marks the most serious dispute between Washington and Mexico City since the U.S.-Mexico-Canada Agreement on trade took effect two years ago. If unresolved, it could ultimately lead to punitive U.S. tariffs. USTR…
