(TO GO WITH AFP STORY BY SCOTT SECKEL) (
(TO GO WITH AFP STORY BY SCOTT SECKEL) (FILES) Dated March 2, 2009 filed photo shows Mexican Federal Police personnel patrol the streets of Ciudad Juarez, near the US border, during an anti-narcotics operation. Illegal immigration and drug smuggling have always been issues in US states bordering Mexico, but warring Mexican cartels are carrying violence into the United States to levels that have shocked law enforcement and government officials. AFP PHOTO/Ronaldo SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)
