Nigel Harris shows exactly how and why immigration is the lifeline of the developed world's economy, making both the rich and the poor richer. There have been poor countries and rich countries since countries first began, but only in the 20th century--the century of nationalisms and ethnic cleansings--have controls been implemented to stop movement between them. In this survey of immigration throughout the world, Harris examines the net effects of population change on income, employment, wealth, growth, and their areas.
Very interesting, and still relevant a decade after publication. This offers a quick and informative primer on immigration: why people move, where they move to/from and who chooses to move. It explains thoroughly the benefits immigration bring countries smart enough to open their borders, and how the prohibitive laws and border controls both damage the country's economy and make possible criminal networks of traffickers. It does a great job of countering some prejudices I wouldn't have even admitted to having, which was for me one of its strengths. I would definitely recommend this book.