Should-Read: Yes. The invariable rule is that results George Borjas reports on immigration should be handled with tongs and asbestos mitts. Why do you ask? https://www.cgdev.org/blog/what-mariel-boatlift-cuban-refugees-can-teach-us-about-economics-immigration

Michael Clemens: What the Mariel Boatlift of Cuban Refugees Can Teach Us about the Economics of Immigration: An Explainer and a Revelation: “The Borjas study had a critical flaw that makes the finding spurious…

…That flaw is explained in a new research paper that I co-authored with Jennifer Hunt, who is the James G. Cullen Professor of economics at Rutgers University. In this blogpost, I explain the flaw and why it reinforces earlier findings that the Mariel Boatlift influx of Cuban immigrants did not reduce wages of Miami workers…. The study focuses on a small group within that larger sample, a group where the sample shifted to include a lot more black male workers with relatively low wages—simultaneously with the Boatlift. This has the effect of sharply reducing the average wage of people in the sample, but this had nothing to do with the Cuban influx…