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This study examines the influence of political, economic and demographic factors on the size and composition of migration flows to North America. A modified gravity model is specified and adjusted to include immigration regulations and characteristics specific to the origin and destination countries. For empirical test of the model, the time period of study is from 1976-1986, and 70 countries are covered for a total of 1540 observations of migration flows to Canada and the USA. The results reveal that the population of origin countries and the income of destination countries are two major determinants of migration to North America. High population areas of Asia and Latin America provided a large share of the immigrants. Domestic restrictions on political and civil freedom in origin countries are found to significantly impair migration to North America.
Karemera et al. (Sun,) studied this question.
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