U.S. agents aid mexican drug infiltration article

Although relations between the United States and Mexican government have been tense over issues involving drug, money, and gun trafficking, recently the two governments worked together to take down a Mexican drug criminal ring. This operation is significant because it shows that the United States and Mexico have the possibility of working together successfully.

http://www.nytimes.com/2012/01/09/world/americas/us-agents-aided-mexican-drug-trafficker-to-infiltrate-ring.html?_r=1&ref=drugtrafficking