Just as the prohibition of alcohol fueled the rise of the mafia in the late 1920s, the current federal laws against weed emboldens organized crime domestically and in Mexico. Duh, right? However, there’s one thing that appears to be chipping away at that power structure — and it’s not national guard troops on the southern border. It’s legal cannabis in the United States.

The demand for high caliber pot made in the U.S. is outpacing the demand for low quality pot from Mexico aka dirt weed, and that’s not good news for growers in that country, reports NPR. It has led to a precipitous decline in the prices they can charge, which have already dropped to a historic low. This in turn, reduces the amount of money cartels can rake in and gives all new meaning (and urgency) to the term “buy American.”