http://news.bbc.co.uk/1/hi/uk/5080316.stm
Danny Wood
"An amnesty for illegal immigrants - a look at the Spanish example. In May last year a three month amnesty for illegal immigrants came to an end. The result was about 700,000 people were issued official papers to allow them to live and work in Spain legally. The Spanish government said the amnesty was part of an immigration policy based on the economic needs of the country, to satisfy demand in the construction and services sectors. It was also about getting millions of euros of taxes and legally protecting often exploited, underpaid immigrants languishing in black market jobs."