There is only one way a nation can stop people from wanting to emigrate to it, and that is by not having anything anyone wants. Otherwise, it must evolve an unapologetically xenophobic government in the attempt to keep inflows to a trickle. And what would the implications of this be? Not much, if it is used to bigotry; but where a society claims to be open and free, respectful of human rights, and a leader in, and of, the global community, then the narrowing of public attitudes towards the Foreigner becomes vastly significant, signaling not just a shift in policy but a shift in the character of the State itself. So, Brexit is significant precisely because it is happening – not in Russia or China – but in the United Kingdom. From the heart of Western Liberalism comes a worrying statement; that the UK, comfortable with the EU when the EU was comprised of nations like France and Germany, finds the prospects of stronger ties with people from Poland, Hungary and (God forbid) Turk...