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As an example of the likely future of science in the USA, read about Trofim Lysenko.
That word makes a lot of people uncomfortable and many will shut their brains off when they see it. It's a perfect word to describe what's happening, but sometimes describing the characteristics of it is better for engagement.
There are a lot of reactionaries in today's political landscape.
The irony is that almost every single one of the countries these foreigners come from would do exactly the same thing were the shoe on the other foot. If running government-funded research to maximize the opportunities for native born people is “fascism,” then every country in Asia, Africa, and the Middle East is “fascist.” Borderless universalism is a niche idea even in the west, and virtually non-existent outside it.
Got to love the fact that a large amount of users of HN still refuse to see the truth before their very eyes.