In 1994 the Federal Constitutional Court ruled that drug addiction was not a crime, nor was the possession of small amounts of drugs for personal use. In 2000 the German narcotic law ("BtmG") was changed to allow for supervised drug injection rooms. In 2002, a pilot study was started in seven German cities to evaluate the effects of heroin-assisted treatment on addicts, compared to methadone-assisted treatment. The positive results of the study led to the inclusion of heroin-assisted treatment into the services of the mandatory health insurance in 2009. On May 4, 2016 the Cabinet of Germany decided to approve the measure for legal cannabis for seriously ill patients who have consulted with a doctor and "have no therapeutic alternative". German Health Minister, Hermann Gröhe , presented the legal draft on the legalization of medical cannabis to the cabinet which is expected to take effect early 2017.     
Miron: If drugs were legalized, many of the big cartels in Mexico would try to use the benefits of their experience by setting up a legal company right away. They'd want to be the first and they've got good products and a good distribution network. It's still highly uncertain whether the drug cartels want legalization. El Chapo Guzmán, the most powerful cartel boss in the world, has a natural advantage because he's a very skilled criminal -- that's why he's so rich. If there was no longer a black market for drugs, Guzmán would lose his advantage.