Just as EU trade barriers that prevent African farmers selling the fruits of their labour in Britain are unfair, so are immigration controls that stop Africans selling their labour here.I agree 100 per cent with this comment. But I'd rather see the trade barriers come down first. Then let migrants decide to come to the west because they want to, not because they have no chance of prospering in their own country. We need and want willing migrants, not those compelled to come here because we stifle their country's development by corrupt, insane trade barriers like the EU's Common Agricultural Policy.
A related point, and one that I have not seen mentioned in other reviews, is the effects that emigrants from the third world have on the country from which they depart. Much of the discussion that there is centres on the financial remittances that flow back from the rich countries. But there are incalculable social costs that arise when a country's most ambitious, energetic and talented people would rather work in a foreign country than try to improve their country from within.