Despite state-level momentum, truckers 'prohibited from using marijuana -- period'

Though there's an ever-expanding rift between state law and federal law regarding marijuana use, the issue is clear for carriers and drivers, say Joe Rajkovacz, of the Western States Trucking Association, and Tim Doyle, VP of the Maine Motor Transport Association, both of whom reside in states where aggressive action is being taken to upend drug testing practices regarding marijuana use. Hear them discuss the latest on driver drug testing through the lens of state-level action on legalizing marijuana.