There are two kinds of borders that nations erect. One kind is to keep people in. The other kind is to keep people out. This may sound silly, since a border can and does do both of those things at the same time. But the function of a physical border has little to do with [...]

Imagine for a moment a world without national borders. In this world, people would have the ability to travel anywhere without restriction; they would be able to live anywhere without regards to place of birth; they would be able to shop, to learn, and to converse with people of many races and cultures. This kind [...]