Kosovo.

For all of those people who adopt a casual line on immigration, I invite you to consider the 'new nation' of Kosovo.

It was a clear cut part of Serbia and in the first quarter of the 20th century, subjected to mass, uncontrolled, Albanian immigration. These people were the Kosovars who soon outnumbered and supplanted the native population.

And as recent history has shown, they have now laid claim to that land as their own.

This immigration brought war and loss of a large portion of their country for the Serbs.

Might there be some kind of message for us in all of this?