A map and corresponding research from the 2013 World Drug Report from the United Nations Office of Drugs and Crime (UNODC) illustrates this point.
The report states that North America accounted for 69% of global herb seizures in 2011, and yet the availability of marijuana in the U.S. appears to have increased.
The U.S. attributes the increase to continually high levels of production in Mexico as well as increased domestic cannabis cultivation.
The UNODC notes that 2009 was the first year ever that the amount seized in the U.S. exceeded the amount seized by the Mexican authorities . This suggests that not only is the U.S. curbing the flow of marijuana from Mexico, but it also faces increased production at home.
In the last decade, cartels have conquered Mexico and infiltrated so deeply into the U.S. that in February Sinaloa kingpin Joaquin "El Chapo" Guzman was named Chicago's first Public Enemy No.1 since Al Capone.
The areas of high eradication of plants corresponds with the flow of durgs into the U.S., as seen by this map from the Justice Department's National Drug Threat Assessment 2011:
DOJ National Drug Threat Assessment 2011
Nevertheless, the fact that Colorado and Washington state are first places in the world to completely legalize marijuana provides a way forward.
The top advisor to incoming Mexican president Peña Nieto said that the weed legalization in Colorado and Washington “changes the rules of the game” in the war on drugs as it turns America's crusade against weed on its head.
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