Political Theory in the Age of Mass Migration

As if by a lit delay fuse finally reaching its explosive charge, the issue of mass immigration has exploded the political establishments of the developed world. Many commentators have sensibly asked why so many governments not only had difficulty marshaling arguments for restricting immigration, but actively pursued what turned out to be untenably high intake levels for so many years. But what I’ve wondered is: why so few political thinkers seem to have anticipated that this phenomenon would become so widespread, to the point that it now dominates political debates around the world.