Let's say "Many of America's tech companies were founded by immigrants, or the children of immigrants." Google, Sergey Brin Intel, Andy Grove Sun, Vinod Khosla Dropbox, Arash Ferdowsi

Note that all of those came through Stanford or MIT. America's elite universities are hotbeds of immigrant talent that other countries would like to siphon off.

The current war on america's multiculturalism (in pursuit of votes and political power) threatens to deeply damage America's universities, and thus its tech economy.