Ha!!
In some instances, the entire flow of the drug trade has changed course. DEA spokesman Lawrence Payne told NPR last year that “Sinaloa operatives in the United States are reportedly buying high-potency American marijuana in Colorado and smuggling it back into Mexico for sale to high-paying customers.”
http://www.dailykos.com/story/2015/06/22/1395559/-Another-pot-myth-is-discredited