Prohibitionist policies abound, and they cost us dearly. A new report by the Government Accountability Office makes painfully clear that the U.S. is wasting taxpayer dollars on the drug war in Mexico. After two full years, the U.S. has no clear measures in place to determine if its $1.6 billion aid package to Mexico -- known as the Merida Initiative -- is having any impact whatsoever on the strength of the cartels.