If I were a Mexican stuck in Mexico, I, too, would grab a jug of aqua, stuff fistfuls of tortillas into a bandana, then tie that knap sack onto the end of a long stick and start my slog north for the Promised Land. What would be the rationale for my exodus from Santa Ana land? Well, one big reason is the zero opportunity in Mexico. Mexico’s economic future is about as bright as Leif Garrett’s singing career. I’m talking there is nada for the average José. Look, Vicente Fox can only hire out so many pool boys, chefs, drivers,...