My latest op-ed was published today by In it, I evaluated claims by Senator Jeff Sessions and Rep. Mo Brooks that “we don’t have that many jobs” (Sessions) and that “simple economics” says “You increase the supply of anything, it tends to push down the price.” Much of my argument centers on Adam Smith’s claims in The Wealth of Nations:

The greatest improvement in the productive powers of labour, and the greater part of the skill, dexterity, and judgment with which it is any where directed, or applied, seem to have been the effects of the division of labour.

My main source was Giovanni Peri’s article in the Winter 2012 issue of the Cato Journal. That issue features an essay by our very own Bryan Caplan titled “Why Should We Restrict Immigration?