Mexico's president approved several changes to the country's constitution Wednesday aimed at cracking down on human trafficking.

President Felipe Calderon announced two of the changes - one that requires those accused of human trafficking to be imprisoned during trials, and one that guarantees anonymity of victims who denounce the crime.

"It is important that they can give their testimony to the authorities and to society without being at risk," he said.

Calderon gave Mexico's Congress 180 days to approve a new nationwide human trafficking law that will reform and streamline how authorities handle such cases across the country. FULL POST