They've driven prices so low that Mexican growers are giving up.
For the first time ever, many of the farmers who supply Mexican drug cartels have stopped planting marijuana, reports the Washington Post. "It's not worth it anymore," said Rodrigo Silla, a lifelong cannabis farmer from central Mexico. "I wish the Americans would stop with this legalization." Facing stiff competition from pot grown legally and illegally north of the border, the price for a kilogram of Mexican schwag has plummeted by 75 percent, from $100 to $25.