This is a curiously US-centric view to take that simultaneously also doesn't acknowledge the U.S.' advantages and history.
The U.S. population is under 5% of the world population — our competitive advantage has always been our ability to poach the best and brightest from across the world by rewarding them appropriately.
It's very reasonable to say that our population alone can't compete with the best and brightest of every other country in the world, and that it's more important to continue being a place that attracts immigration.
Because the majority of US citizens of school age are from historically disadvantaged minorities and you're saying they're just not good enough to compete with the East Asian global majority even with better education. In fact, you appear to be saying we shouldn't even bother to try and that people from wherever it is exactly you're from are innately superior. That's why it's racist and offensive.
There are almost 8 billion people in the world and 320 million in the US. Of course most talent is foreign. No one who wants green cards for engineers is arguing for a decrease in education funding
While it certainly benefits you personally, can you see how offensive and frankly racist this is?