“15 mayors have been killed since President Felipe Calderon declared war on Mexico’s drug cartels shortly after taking office in December 2006 including the murder of the mayor of Santiago, Nuevo Leon, Edelmiro Cavazos.

Several Mexican mayors have been forced to move to the United States for reasons of personal and family safety in the face of threats from drug traffickers and the killings of 10 mayors this year in Mexico.

Mayors from the northern border states of Tamaulipas, Chihuahua and Nuevo Leon have moved to the United States, with some taking up residence in that country permanently and others splitting their time between U.S. and Mexican residences, municipal officials said.

The mayors of at least six border cities in the northeastern state of Tamaulipas have been forced to move to neighboring Texas.”

http://www.borderlandbeat.com/2010/09/threats-from-narcos-force-mexican.html