The percentage of foreign-born in the four major metro areas of the District is smaller than for the nation as a whole. However, some of the metro areas are showing faster growth in their Asian, African and Latin American populations than is the nation overall.
Much is known about the effects of unauthorized immigration on the nation as a whole. But little research has been done so far on the impact of states’ efforts to curb the influx—efforts such as the E-Verify program.
In the past, the study of international trade often focused on differences in labor, land and capital, as well as the distance between trading partners. But economists are increasingly looking at the role played by institutions, specifically those that enforce contracts and curb corruption.
The root causes of terrorism might not be poverty and lack of education, as many believe. Rather, the lack of civil liberties, political rights and the rule of law might be more influential.