"Who most benefits from keeping marijuana illegal?"

"The greatest beneficiaries are the major criminal organizations in Mexico and elsewhere that earn billions of dollars annually from this illicit trade—and who would rapidly lose their competitive advantage if marijuana were a legal commodity. Some claim that they would only move into other illicit enterprises, but they are more likely to be weakened by being deprived of the easy profits they can earn with marijuana."

George Soros, promoting the legalization of marijuana in the Wall Street Journal.