Travel Warnings: Who Determines When & Why?

It’s a destination hot spot. Millions flock to Mexico every year, but one Bay Area man never returned. More violence has forced the feds to warn Americans who travel to the region. But investigative reporter Elyce Kirchner found out there is no standard on how and why — they make that determination. Eylce Kirchner reports. Posted 2 a.m. 5/8/2012