Mexico and three Central American nations are calling for a review of international drug policies after Colorado and Washington State voted to legalize recreational use of marijuana.

The call Monday by Mexican President Felipe Calderon and the presidents of Belize, Costa Rica and Honduras is the most significant Latin American reaction yet to the Nov. 6 decisions by voters in Colorado and Washington. The Mexican administration that takes office Dec. 1 has already questioned how it will enforce a ban on growing and smuggling a drug legal under some state laws.

Mexico is the primary supplier of marijuana to the U.S., while Honduras and Belize are important stops on the northward passage of cocaine from South America. Costa Rica is seeing increasing use of its territory by drug traffickers.