http://www.travel.state.gov/travel/c...a/pa_3028.html
This Travel Alert updates information for U.S. citizens on security situations in Mexico that may affect their activities while in that country. This supersedes the Travel Alert for Mexico dated October 24, 2007, and expires on October 15, 2008.
Violence Along The U.S.-Mexico Border
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Violent criminal activity fueled by a war between criminal organizations struggling for control of the lucrative narcotics trade continues along the U.S.-Mexico border. Attacks are aimed primarily at members of drug trafficking organizations, Mexican police forces, criminal justice officials, and journalists. However, foreign visitors and residents, including Americans, have been among the victims of homicides and kidnappings in the border region. In its effort to combat violence, the government of Mexico has deployed military troops in various parts of the country. U.S. citizens are urged to cooperate with official checkpoints when traveling on Mexican highways.