Mexico’s Curbs on U.S. Role in Drug Fight Spark Friction

In their joint fight against drug traffickers, the United States and Mexico have forged an unusually close relationship in recent years, with the Americans regularly conducting polygraph tests on elite Mexican security officials to root out anyone who had

U.S. role at a crossroads in Mexico’s intelligence war on the cartels

For the past seven years, Mexico and the United States have put aside their tension-filled history on security matters to forge an unparalleled alliance against Mexico’s drug cartels, one based on sharing sensitive intelligence, U.S. training and joint op