When medical marijuana vending machines appeared at a handful of Los Angeles-area dispensaries a couple of weeks ago, the press attention they received was enormous -- so enormous that it was heard deep in the bowels of the UN anti-drug bureaucracy in Vienna. Roused from its dogmatic slumber by the clamor, the UN's International Narcotics Control Board (INCB) issued a statement last Friday saying the machines violate international drug treaties and should be shut down.

medical marijuana vending machine on CBS News

"The International Narcotics Control Board is deeply concerned about reports that computerized vending machines to dispense cannabis (marijuana) have been put into operation in Los Angeles," said INCB head Philip Emafo in the statement. "We know that the use of cannabis is illegal under federal law of the United States and we trust the authorities will stop such activities, which contravene the international drug control treaties," he added.

The federal government may not recognize medical marijuana, but it is legal under state law. So far, there is no indication that providing it via vending machines violates the state's medical marijuana laws, much less international treaties which only prohibit non-medical use. And so far, the DEA has not acted against them.

The machines have appeared in three Los Angeles dispensaries, and supporters say they are convenient for patients, secure, and could provide medical marijuana at lower prices. Qualified patients who wish to use the vending machines must provide documentation and fingerprints to the dispensary, which then issues them a card to insert in the machine.

While the INCB reiterated that marijuana is illegal under federal law, it also seemed to suggest that if marijuana was going to be used, its use should be controlled by a federal agency. "The control measures applied in California for the cultivation, production and use of cannabis do not meet the control standards set in the 1961 Convention to prevent diversion of narcotic drugs for illicit use," the INCB said. "Such standards require, inter alia, the control of cultivation and production of cannabis by a national cannabis agency, and detailed record keeping and reporting on the activities with cannabis, including reporting to INCB."

The INCB also took pains to note that it "welcomes sound scientific research on the therapeutic usefulness of cannabis," although it claimed that "so far, the results of research regarding the potential therapeutic usefulness have been limited." But in the same breath, it then complained that Canada and the Netherlands have authorized medical marijuana "without reporting conclusive research results to the WHO" and that "cannabis is used for medical purposes in some jurisdictions of the United States without having definitive proof of its efficacy."

Whether the INCB's "concerns" will spur action from either federal or state authorities remains to be seen. But with each new dispensary, each new delivery service, each entrepreneurial innovation like the vending machines, the medical marijuana industry is becoming ever more deeply entrenched in the social fabric of the Golden State. It may be too late for anybody to stop it -- even the UN.