While there was progress toward decriminalizing homosexuality in Canada and Europe, progress in the US was much slower.

BBC: 'Stonewall gave me new gay role models'

In the middle there may be more practical policies, such as decriminalizing consumption but putting all the efforts into interdiction.

CNN: U.S.-Colombia trade deal to take effect in May

In a 2009 report, three former Latin American presidents -- Brazil's Fernando Henrique Cardoso, Colombia's Cesar Gaviria, and Mexico's Ernesto Zedillo -- called for decriminalizing cannabis for personal use.

CNN: Guatemala's president makes drug legalization pitch