Black market marijuana grows are popping up faster than law enforcement can take them down. But is legalization the cause?

As he awaited sentencing in 2010, Fayin Deng sounded a contemplative, philosophic note.

“I have learned now that once you become obsessed with money, no matter how great your original need was,” Deng wrote to the federal judge overseeing his criminal case, “there is no such thing as feeling like you have enough.”

The source of his cash came from a different kind of green — marijuana. It was “easy money,” Deng wrote, referring to his role in a large-scale Colorado drug trafficking organization responsible for growing massive quantities of illicit marijuana for sale across the country.

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