the United States and in a foreign country is measured by average incomes of $50,000 and $5,000 respectively. This yields a combined World Gross Product of $55,000. If under open borders the foreigner chooses to work in the U.S for $20,000, their combined World Gross Product rises to $70,000. Humanity is enriched.
Notice, however, that although the average native worker in the U.S. is still making $50,000, the average income in the United States is now lower at $35,000 ($50,000 + $20,000 / 2). Yes, the immigrant’s arrival has lowered the statistical average income, but his income, and the income of the world, has increased at no cost to the native worker. Admittedly this is a simplistic illustration, over time the supply of lower cost labor could bring down the income of that native worker. The point is simply that the often-cited statistics need scrutiny.
Another objection to immigration is the fiscal burden that it imposes on government services. But many government services are what economists call “non-rival” services: services where the total cost of the services stays the same even as population increases. National defense is the classic example of a “non-rival” service that does not increase in cost due to population growth.
Of the remaining “rival spending” on government services, over two thirds is for the very young and the very old. Professor Caplan’s work shows that most immigrants are of working age, neither very young nor very old. Rather than a fiscal burden, working age immigrants mostly contribute thru taxation to programs for the young and the old. A report by the National Academy of Science concludes that the overall long-term fiscal effect of a new immigrant is a positive $259,000. Unless immigrants are old and low skilled, they more than pay for themselves.
Caplan numerically addresses other objections to unlimited immigration such as criminality, terrorism, political ideology, cultural dilution and more. And yet, I remain uncomfortable with the idea of open borders. But now, I am even more uncomfortable because I do not know why I remain uncomfortable.
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