[karmelapple]

If someone has come to the USA for education, and can find a job in that field, I think it's fair. If you've shown you're willing to get good grades throughout four years of college, that's some indication that you have good discipline and would be a net benefit to the economy.

There's no guarantee of that, but if someone wants to stay, they'll be paying taxes (and were throughout their schooling days), driving the housing market, etc. If they can't find a job, they'll likely think about going elsewhere.