“Since states have risen restrictions on marijuana, the demand for Mexican drugs has gone down significantly. The LA Times reports that in 2008 two-thirds of all marijuana consumed in the U.S. had been imported from Mexico, and now it’s less than one-third.”
“…since higher quality American product is now much more accessible, people are “[turning] their backs on imports.”
Source: Mexico’s Marijuana Industry Takes a Hit as U.S. Loosens Restrictions – Fortune