People protectionism Rich countries respond to the economic downturn by trying to limit the flow of migrants IN THE boom years, migrants picked fruit in southern California's orange groves, worked on construction sites in Spain and Ireland, designed software in Silicon Valley and toiled in factories all over the rich world. Many will continue to do so, despite the economic downturn. But as unemployment rises in most rich countries, attitudes towards migrants are hardening. Attacks on Romanians in Northern Ireland and on Indian students in Australia are the most visible and disturbing manifestations of growing xenophobia. In response, many governments...