The open borders types never bother to explain how their new borderless society will work or what would happen if it turns out to be something other than paradise. When anyone bothers to ask them, they respond like it is obvious, but to date no one has tried to explain how a world without borders could possible work. The best they can muster is something about “who we are” which is ridiculous in a world without borders, as there is no “we” for us to be. It’s madness dressed up as morality.