Within low-income countries, richer people are more likely to emigrate. And as low-income countries economically grow, people are more likely to emigrate.
But we shouldn’t use a fear of migration as a reason to keep poor countries poor. That would ignore the inherent value of poverty reduction, as well as harm donor countries’ own interests in a prosperous, healthy, and stable world. Rather, these facts matter because development policy that is not based on facts never works. Development assistance should engage with human mobility—not to deter it, but to shape it for mutual benefit.