Recent changes in the US have changed that calculus but you can’t create an entire industry in the blink of an eye (and, of course, those changes can be reversed at any point)
- how many US citizens do these labs hire for every immigrant scientist they employ? There are support roles at all levels, all the way down to custodian. What jobs are lost when these grants are denied? A lot of this work will (hopefully!) continue, just in other counties. Now those countries get to employ their citizens instead.
- are the youth unemployed compared to previous levels? Are these unemployed youths able to do the jobs the immigrants do?
The US doesn’t take in skilled immigrants as a favor to the rest of the world or something. Other countries educate their citizens to a high level then the US poaches them and has them contribute to growing the US economy. It’s the story of countless Silicon Valley startups so it’s especially surprising to see this sentiment on HN!