A new study from the Instituto Mexicano Para La Competitividad A.C. (Mexican Institute for Competitiveness) reveals potentially devastating consequences for a number of Mexican drug cartels should marijuana be legalized in a handful of the United States. The Mexican think thank believes the legalization measures on the ballot in Colorado, Oregon, and Washington could cut combined cartel profits by as much as 22 to 30 percent, and could severely cripple the infamous Sinaloa Cartel that operates in Western Mexico. source