They take a huge hit. "A study released Wednesday

They take a huge hit. "A study released Wednesday by a respected Mexican think tank contends that proposals to legalize the recreational use of marijuana in Colorado, Oregon and Washington could cut Mexican drug cartels' earnings from traffic to the U.S. by as much as 30 percent ."
http://www.cbsnews.com/news/study-us-marijuan...n-cartels/

And that's just three states!