All this should worry even die-hard anti-immigration Tories, argues Nando Sigona of COMPAS. Many, perhaps most, irregular children will gain British nationality in time.

ECONOMIST: Migrant children

But there are a lot of them some 120, 000 in Britain, or one in 100 children, according to a new study by Oxford University's Centre for Migration, Policy and Society (COMPAS).

ECONOMIST: Migrant children

Mr Martelly ran an unusually slick campaign, enlisting the help of election consultants to project a more serious image than that of the flamboyant musician who made his name playing compas dance music in the 1980s.

BBC: Haiti profile