The move comes amid growing pressure in the region to discuss legalization and its alternatives, and weeks before Santos will discuss legalization at the Summit of the Americas.

The government of Colombian President Juan Manuel Santos is preparing legislation that will set "personal dose" amounts for drugs that will allow for their possession without the possibility of arrest or prosecution, the Bogota newspaper El Tiempo reported Tuesday. The decriminalization legislation could be presented as early this week, the newspaper said in its exclusive report.