“…Other explanatory variables are endogenous to either aid, migration or trade (e.g., Unemployment, Differences in unemployment, GDP (South), Governance, Imports, Donor trade openness and Recipient trade openness ). First, immigration flows may affect the rates of unemployment in OECD countries by directly increasing the labour supply (see, e.g., Boubtane, Coulibaly, and Rault () and Ortega and Peri ()). Second, GDP (South) can increase with foreign assistance (Dollar & Levin, ); in addition, the economic impact of migration has been widely documented (see Combes, Ebeke, Maurel, and Yogo ()).…”