On March 14, 2010, the United States Department of State issued a travel advisory raising warning flags re travel to Mexico. Please go to the following link - http://travel.state.gov/travel/cis_pa_tw/tw/tw_mexico.html
The U.S. travel advisory starts:
The Department of State has issued this Travel Warning to inform U.S. citizens traveling to and living in Mexico of concerns about the security situation in Mexico, and that it has authorized the departure of the dependents of U.S. government personnel from U.S. consulates in the Northern Mexican border cities of Tijuana, Nogales, Ciudad Juarez, Nuevo Laredo, Monterrey and Matamoros until April 12. Family members of US Government personnel assigned to other areas of Mexico outside the Mexican border states are not affected by this departure measure.
The U.S. travel advisory goes on to state:
Recent violent attacks have prompted the U.S. Embassy to urge U.S. citizens to delay unnecessary travel to parts of Durango, Coahuila and Chihuahua states(see details below) and advise U.S. citizens residing or traveling in those areas to exercise extreme caution. Drug cartels and associated criminal elements have retaliated violently against individuals who speak out against them or whom they otherwise view as a threat to their organizations. These attacks include the abduction and murder of two resident U.S. citizens in Chihuahua.
Canada did not update its travel report for Mexico - http://www.voyage.gc.ca/countries_pays/report_rapport-eng.asp?id=184000
The U.S. travel advisory is important in light of NAFTA. When there are concerns about the safety of foreigners in Mexico, trade effects must be considered. Canadian and U.S. business travellers should consider whether travel for business is necessary. When the U.S. embassy personnel decrease, travel by Mexicans to the United States may be affected.
Canada required Mexican citizens to obtain visas prior to travel to Canada. It is possible that it will take longer to visa applications to be reviewed and approved.
The travel advisory and side effects may create impediments to trade.