Policy analysts who favor reduced immigration to the United States have always had one plausibly compelling argument: If you cut off the supply of cheaper labor, they maintained, employers would be forced to raise wages for lower-skilled, native-born workers, who would then demonstrate the fiction behind the contention that there were some jobs "Americans just won't do."
Well, we have just conducted a fascinating real-world test of that hypothesis. Beginning with the restrictionist presidency of Donald Trump in 2017, and then supercharging through the effective 2020–21 border-closure triggered by the COVID-19 pandemic, the U.S. took in about 1.7 million fewer working-age immigrants than would have come at the prior intake rate, according to a recent analysis by Giovanni Peri, economics professor at University of California at Davis.
