Donors' openness to immigration and the effectiveness of foreign aid

We argue that donors could improve the effectiveness of foreign aid by pursuing complementary and coherent non-aid policies. In particular, we hypothesize that aid from donors that are open to immigration has stronger growth effects than aid from closed donors. We estimate the aid-growth nexus in first differences to mitigate endogeneity concerns. Our empirical results support the hypothesis that donors' openness to immigration strengthens the growth effects of foreign aid.