Spain is offering working papers to nearly a million immigrants. The new measure will apply only to people already in Spain, and who came or have stayed in the country illegally. The amnesty goes against recent anti-immigrant trends and policies across Europe, and against sentiments of at least a third of Spaniards who, according to polls, see immigration negatively. But Spain needs workers, and it needs them paying taxes. The World’s Gerry Hadden reports from Barcelona.