In 2009 the federal Bureau of Alcohol, Tobacco, Firearms and Explosives promoted Voth to lead
Phoenix Group VII, one of seven new ATF groups along the Southwest border tasked with stopping guns from being trafficked into Mexico's vicious drug war.
Some call it the "parade of ants"; others the "river of iron." The Mexican government has estimated that 2,000 weapons are smuggled daily from the U.S. into Mexico. The ATF is hobbled in its effort to stop this flow.