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Steve Fainaru and William Booth report:

Almost all of the marijuana consumed in the multibillion-dollar U.S. market once came from Mexico or Colombia. Now as much as half is produced domestically, often by small-scale operators who painstakingly tend greenhouses and indoor gardens to produce the more potent, and expensive, product that consumers now demand, according to authorities and marijuana dealers on both sides of the border. The shifting economics of the marijuana trade have broad implications for Mexico's war against the drug cartels, suggesting that market forces, as much as law enforcement, can extract a heavy price from criminal organizations that have used the spectacular profits generated by pot sales to fuel the violence and corruption that plague the Mexican state.

Now imagine the blow to the Mexican drug cartels if prohibition were lifted. But we couldn't do that, could we?

(Hat tip: Reason)

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