The classical argument in favor of free immigration runs as follows: Other things being equal, businesses go to low-wage areas, and labor moves to high-wage areas, thus affecting a tendency toward the equalization of wage rates (for the same kind of labor) as well as the optimal localization of capital. An influx of migrants into a given-sized high-wage area will lower nominal wage rates. However, it will not lower real wage rates if the population is below its optimum size. To the contrary, if this is the case, the produced output will increase over-proportionally, and real incomes will actually rise. … Continue reading On Free Immigration and Forced Integration