"The United States and Mexico have a close and complex bilateral relationship, with extensive economic linkages as neighbors and partners under the North American Free Trade Agreement (NAFTA). Bilateral relations are close, and characterized by extensive commercial and cultural ties and cooperation on a range of bilateral and international issues. A current bilateral dispute involves the implementation of NAFTA trucking provisions. In March 2009, Congress terminated a pilot-project for Mexican-registered trucks to operate beyond the border commercial zone, and Mexico responded by imposing import tariffs on over 90 U.S. agricultural and industrial products. […].President Barack Obama traveled to Mexico on April 16-17, 2009 to discuss cooperation in the fight against drug-related violence, immigration reform, and clean energy and climate change. This had been preceded by visits in March by Secretary of State Clinton, who discussed a broad range of bilateral issues, including Mérida Initiative cooperation, and Secretary of Homeland Security Napolitano, and Attorney General Eric Holder who emphasized new anti-crime efforts. On April 24, 2009, Mexico's Health Ministry announced an outbreak of a new influenza strain, subsequently dubbed influenza A(H1N1). The Centers for Disease Control and Prevention issued a travel health warning on April 27 advising U.S. citizens to avoid all nonessential travel to Mexico. The Calderón government took significant measures to combat the outbreak, which began to ease in early May 2009. The influenza outbreak will likely have a significant negative effect on the Mexican economy, which already has been experiencing a severe downturn because of the global financial crisis and U.S. recession."
CRS Report for Congress, RL32724