Slumping demand for Mexican "brick weed" has more drug farmers turning to growing opium poppies for heroin production. Here, Mexican soldiers stand amid poppy flowers and marijuana plants during an operation at Petatlan hills in Guerrero state, Mexico on Aug. 28, 2013. (Pedro Pardo, AFP/Getty Images)

New drug dynamic for Mexico-U.S.: Less pot, a lot more heroin, meth

Made-in-the-USA marijuana is quickly displacing cheap, seedy, Mexican brick weed, and cartels south of the border are changing tactics.

SAN YSIDRO, Calif. — Mexican traffickers are sending a flood of cheap heroin and methamphetamine across the U.S. border, the latest drug seizure statistics show, in a new sign that America’s marijuana decriminalization trend is upending the North American narcotics trade.

The amount of cannabis seized by U.S. federal, state and local officers along the boundary with Mexico has fallen 37 percent since 2011, a period during which American marijuana consumers have increasingly turned to the more potent, higher-grade domestic varieties cultivated under legal and quasi-legal protections in more than two dozen U.S. states.

Made-in-the-USA marijuana is quickly displacing the cheap, seedy, hard-packed version harvested by the bushel in Mexico’s Sierra Madre mountains. That has prompted Mexican drug farmers to plant more opium poppies, and the sticky brown and black “tar” heroin they produce is channeled by traffickers into the U.S. communities hit hardest by prescription painkiller abuse, offering addicts a $10 alternative to $80-a-pill oxycodone.

“Legalization of marijuana for recreational use has given U.S. consumers access to high-quality marijuana, with genetically improved strains, grown in greenhouses,” said Raul Benitez-Manaut, a drug-war expert at Mexico’s National Autonomous University. “That’s why the Mexican cartels are switching to heroin and meth.”

U.S. law enforcement agents seized 2,181 kilograms of heroin last year coming from Mexico, nearly three times the amount confiscated in 2009.

Methamphetamine, too, has surged, mocking the Hollywood image of backwoods bayou labs and “Breaking Bad” chemists. The reality, according to Drug Enforcement Administration figures, is that 90 percent of the meth on U.S. streets is cooked in Mexico, where precursor chemicals are far easier to obtain.


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“The days of the large-scale U.S. meth labs are pretty much gone, given how much the Mexicans have taken over production south of the border and distribution into the United States,” said Lawrence Payne, a DEA spokesman. “Their product is far superior, cheaper and more pure.”

Last year, 15,803 kilograms of the drug was seized along the border, up from 3,076 kilos in 2009.

“Criminal organizations are no longer going for bulk marijuana,” said Sidney Aki, the U.S. Customs and Border Protection port director here at the agency’s busiest crossing for pedestrians and passenger vehicles, just south of San Diego. “Hard drugs are the growing trend, and they’re profitable in small amounts.”

Voters in the District of Columbia and 23 U.S. states have approved marijuana for recreational or medical use, with Colorado, Washington state, Alaska and Oregon opting for full legalization. Estimates of the size of America’s marijuana harvest vary widely, and DEA officials say they do not know how quickly it may be increasing as a result of decriminalization.

Mexican cartels continue to deploy people as “mules” strapped with 50-pound marijuana backpacks to hike through the Arizona borderlands and send commercial trucks into Texas with bales of shrink-wrapped cannabis so big they need to be taken out on a forklift.


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But the profitability of the marijuana trade has slumped on falling demand for Mexico’s “brick weed,” so called because it is crushed into airtight bundles for transport across the border. Drug farmers in the Sierra Madre say that they can barely make money planting mota anymore.

The cartels, and consumers, are turning away from cocaine, too. Last year, U.S. agents confiscated 11,917 kilograms of cocaine along the Mexico border, down from 27,444 kilos in 2011.

This reflects lower demand for the drug in the United States, experts say, as well as a cartel business preference for heroin and meth. Those two substances can be cheaply produced in Mexico, unlike cocaine, which is far pricier, and therefore riskier, because it must be smuggled from South America.

The Sinaloa cartel, considered Mexico’s most powerful drug trafficking organization despite the capture last February of leader Joaquin “El Chapo” Guzman, remains the dominant criminal power along Mexico’s Pacific Coast. Its territory spans the entire western half of the U.S.-Mexico boundary, from Ciudad Juarez, opposite El Paso, to Tijuana, on the Pacific Coast.

At harvest time, the cartel’s middlemen make their rounds to remote Sierra Madre stream valleys in pickup trucks and four-wheelers, armed with guns and cash. They buy sticky balls of raw opium from hardscrabble farmers and deliver them to crude heroin kitchens that prepare the drug for shipment. The U.S. interstate highway system is less than a day’s drive away.

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