Giovanni Peri research cited by a recent article published in the Baltimore Sun

Maryland’s “crab crisis,” the lack of seasonal workers for about half of the Eastern Shore crab houses — a dilemma caused by a statutory limit on the number of visas the federal government issues and a change by the Trump administration in the way those visas are distributed — comes from a stubborn mindset: Without strict limits, American workers will be harmed by an influx of foreigners.

Peri wanted to know what effects immigrants had on American employment rates, productivity and wages in regional labor markets. His examination of data went back 50 years, to the early 1960s. He concluded that there was no evidence that immigrants crowd out U.S.-born workers in either the short term or long run. 

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