I usually stay out of the whole "immigration" thing, but actually, I heard something pretty interesting the other day about it related to this. It turns out that after the terror wars in Central America, when tons of Salvadoreans, Hondurans, and Guatemalans fled to the U.S., many settled in poor areas of across the southwest, in general places already rife with gang violence, drug trafficking, etc. So in the past couple of decades (especially recently), as a lot returned and now many are getting deported or leaving the States, along with the large flow of people are "elite" gangsters trained in Los Angeles and returning with contacts and experience back to Central America. As a result, the gang networks ("maras") are stronger than ever and the drug-traffic across the isthmus is well oiled with skilled gangsters. Scary cycle, eh!? Maybe setting up that wall's not such a bad idea after all!