With his "shithole" comment, Trump makes clear he would bring the United States back nearly a century to the 1920s, when immigration "quotas" were imposed for countries whose inhabitants were deemed undersirable, essentially cutting off immigration of Jews, Italians and Slavs. But deepening the insult, today Haitians and Salvadorans are being driven from their homelands by poverty and instability which is itself the bitter fruit of "free trade" policies foisted upon their governments by pressure from Washington. (Photo: Homeland Security's Otay Mesa Detention Center, BBC World Service via Flickr)