Islamic Radicalism in Mexico: The Threat from South of the Border By Chris Zambelis The ongoing controversy surrounding the debate over illegal immigration and border security issues in the United States, specifically as it applies to the porous U.S.-Mexico frontier and the status of millions of undocumented workers and other migrants that enter the country each year from Mexico, continues to dominate headlines. Although the overwhelming majority of those entering the United States from Mexico each day are in search of opportunity, many observers worry that it is only a matter of time before al-Qaeda exploits this vulnerability for its...