Open borders, global future, Brian K Murphy / opendemocracy.net. 4 June 2008
http://www.opendemocracy.net/article/open-borders-global-future
"At least 200 million of the world's people - between 3% and 5% of its total population - are currently on the move outside their country of origin. Many of these would have preferred to stay where they were if they could. Another untold number would move if they could, but can't. Many simply are looking for better opportunities, as human beings have done for millennia. The realities of globalisation - economic, environmental, familial - mean that these numbers are bound to increase."