The same study was posted yesterday at a different link (https://news.ycombinator.com/item?id=45367514). As I said then:

> This sounds like a great natural experiment (the quota dropped by 3x!) until you realize that they weren't even coming close to hitting the old quota, and the number of approved h1bs actually rose in the two years after the quota was dropped.

> https://www.uscis.gov/sites/default/files/document/data/h1b0...