ABSTRACT
International migration is an important determinant of income, economic growth, and social change in countries at both ends of the migration flows. For developing economies as a whole, remittances of income back home by migrants exceed 10 percent of gross domestic product (GDP). And in some developed economies, Canada and Switzerland, for example, 20 percent or more of the labor force is foreign born. Of course, immigration is itself a result of income differences across countries, and economic phenomena such as income growth, technological change, and employment have been shown to strongly influence immigration. Countries also have put in place many laws, regulations, and institutions to promote, restrict, and in other ways deal with the movement of people into and out of their territory.
