A small minority of US scientists are paid on grants; and of course, foreign scientists are not paid on US grants at all.
Yet another case where you've simply made something up. The side of 'morality' once again caught in a lie.
Who pays foreign scientists?
" A small minority of US scientists are paid on grants"
Funny, I didn't cite my source, but then, neither did you. I suppose the Chronicle of Higher Ed could be researched.
Roughly 8/10ths of all research dollars come straight from the feds. Roughly 50 percent of grants goes straight to the university as 'overhead'. Professors salaries are 'overhead'. Salaries are part of overhead.