Permanent international migration is an important par t of international migration.Compared with other types of migration, permanent international migration is in characters of legality and long-term residence in immigrant countries.North American is all the while the main destination o f permanent international migrant.But since the late of 1980s, some European countries have become the destinations of the permanent international migrants as well.Religious and ethnical return is on the upsurge in the beginning of 1990s, while family unity takes majority in other traditional immigrant countries.How ever, technology and investment migrations are always welcome by all the immigration countries.
[1] United Nations, International Migration Policies, New York, 1998.
[2] United Nations, International Migration and Development(The concise report), New York, 1997.20.
[3] United Nations, Demographic Yearbook, 1996, New York, 1998.1076-1093.