Drug Violence Spills Over Into U.S.

U.S. authorities are reporting a spike in killings, kidnappings and home invasions connected to Mexico's murderous cartels. And to some policymakers' surprise, much of the violence is happening not in towns along the border, where it was assumed the bloodshed would spread, but a considerable distance away, in places such as Phoenix and Atlanta.

Investigators fear the violence could erupt elsewhere around the country because the Mexican cartels are believed to have set up drug-dealing operations all over the U.S., in such far-flung places as Anchorage, Alaska; Boston; and Sioux Falls, S.D.

"The violence follows the drugs," said David Cuthbertson, agent in charge of El Paso's FBI office.