Borders are lines drawn on maps. Many poor/tribal/homeless people do not see themselves as VZ or CB or anything else for that matter. As has been the case over many centuries, people flow towards what will keep them alive another day/week. Ignorance is what has brought us to this point in our polluting earth and unless technology saves us, we will be in for a big shock in the future. (I am not talking about global warming, I am talking about pollution and resource use-abuse)