Responding to the question "Should Latin America end the war on drugs?", Kleiman argued for tougher sanctions on heavy drug users in the United States to alleviate demand, thereby helping Latin American governments extinguish drug manufacturing operations.
A drug addict "has a chance of about 4 in 5 of being clean a year from now if he’s on probation and a judge puts him on random drug testing with swift, certain and mild sanctions every time he comes up 'dirty,'" Kleiman wrote.
"Because heavy users account for most drug purchases, and most heavy users get arrested often, an aggressive testing-and-sanctions program could shrink hard-drug use in the United States – and thus the pressure on Latin America – by about half," he continued.
Kleiman, whose most recent book is Drugs and Drug Policy: What Everyone Needs to Know, edits the Journal of Drug Policy Analysis.