Why do immigrants come? How do they do? How do immigrants affect their destination countries? How does emigration affect source countries? Analyses provide clear answers to why people immigrate and how they do in their new country. There is considerable and often heated controversy over the impacts of immigration on destination and source countries. Why Do Immigrants Come? For economic gain, says the economist. Because of social networks, says the sociologist. Over short distances, says the geographer. For family reasons, say the rules for visas in many countries. All are right. The flow is from countries with low GDP per capita to countries with high GDP per capita and is greater the smaller the distance between countries (Borjas, 1987; Kamemera,