Violence in Mexico is getting worse by the day. There are reports of beheadings, killings in the several thousands, and an environment of fear that makes it impossible for Mexican officials to do their work. The country's very stability may be threatened.
It's time to put an end to U.S. policies that subsidize these murderous drug gangs. The first step, as a growing chorus of voices is arguing, is to end the quixotic policy of prohibition, a proven failure. But the United States can do even better; by empowering a domestic marijuana industry, the United States would squeeze Mexican cartels' profits, cutting off the financial lifeline that sustains organized narcocrime.
According to U.S. and Mexican officials, some 60 percent of the profits that fuel Mexican narcotrafficking come from just one drug: marijuana. Although such estimates are inherently imprecise, there is no doubt that marijuana is the cash cow that makes these gangs the powerful, dangerous force they are -- both in Mexico and in the 230 U.S. cities where cartels are thought to operate. The chief of the U.S. Drug Enforcement Administration's Mexico and Central America Section recently told the New York Times that marijuana is the "king crop" for Mexican cartels, because it "consistently sustains its marketability and profitability."
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Like it or not, marijuana is a massive industry. One hundred million Americans admit to government survey-takers that they've used it, with nearly 15 million acknowledging use in the past month. That's a huge market -- exceeding the number of Americans who will buy a new car or truck this year, or who bought one last year. Estimates based on U.S. government figures have pegged marijuana as the No. 1 cash crop in the United States, with a value exceeding corn and wheat combined.
Current U.S. policies are based on the fantasy that Americans can somehow make this massive industry go away. But prohibition hasn't stopped marijuana use. Although marijuana use hits peaks and troughs over time, overall consumption of the drug in the United States has risen roughly 4,000 percent rise since the first national ban took effect in 1937. In other words, for 72 years, the U.S. government has in effect granted criminals, including those brutal Mexican gangs, a monopoly on production, distribution, and profits.
http://experts.foreignpolicy.com/posts/2009/03/17/the_case_for_a_domestic_marijuana_industry