From Harvard professor, pot-head, Jeffrey A. Miron . Excerpts: "The U.S. and Mexican responses to this violence have been predictable: more troops and police, greater border controls and expanded enforcement of every kind. Escalation is the wrong response, however; drug prohibition is the cause of the violence . Prohibition creates violence because it drives the drug market underground. This means buyers and sellers cannot resolve their disputes with lawsuits, arbitration or advertising, so they resort to violence instead. Violence was common in the alcohol industry when it was banned during Prohibition, but not before or after ." "Prohibition has disastrous implications for national security. By eradicating coca plants in Colombia or poppy fields in Afghanistan, prohibition breeds resentment of the United States . By enriching those who produce and supply drugs, prohibition supports terrorists who sell protection services to drug traffickers." "The U.S. rep...