America’s expansion to one of the richest nations in the world was partly due to a steady increase in labor productivity, which in turn depends upon the invention and deployment of new technologies and on investments in both human and physical capital. The accumulation of human capital—the...

The United States has admitted more than 3 million refugees since 1980 through official refugee resettlement programs. Scholars attribute the success of refugee groups to governmental programs on assimilation and integration. Before 1948, however, refugees arrived without formal selection...