1) Americans are stupid.
2) Americans can't get the job done.
3) Americans aren't willing to do the work.
And, since foreigners are so much better than Americans in every way, we need to flood this country with people who do not share our values.
It's for the children. And because Global Warming. Or something.
Every imported foreign educated worker only diminishes the value of the costly college education debt to American citizens. When the education loan bubble breaks it will be our immigration policy that served as a major prick. Our crooked greedy politician puppets of both Parties work for global corporate interests, not Americans.