I was an international student at an ivy league. **By far** the smartest guys were the international students, they raised the bar a lot in all my science classes (I majored in CS) and also literature/arts.
I payed full price, no financial aid.
I also stayed for many years after and payed *lots* of taxes.
Think about it, the US gets the very best from Europe/Asia selected from a pool of millions of people, many more than the pool in the US. For free. Are you really complaining?