The United States has backed a decision made by Mexico’s Supreme Court that paves the way for the legalization of marijuana for recreational purposes. The US State Department called for broader cooperation between the United States and Mexico in the fight against drug trafficking, but stressed that each country should come up with its own policies concerning drug use. The comments from a State Department spokesman reflect the drastic shift in tone made by Washington since two US states – Washington and Colorado – legalized marijuana for recreational use in 2012.