While I agree strongly with FAIR's position on immigration, I take exception to invoking "the poverty of its natives". Poverty in the U.S. is primarily behavioral. Doing your best in school (even a poor one), being an honest and willing worker, staying clean and sober, continuing to upgrade your skills and education through life and being willing to relocate for work virtually guarantees your escape from poverty. There's no guarantee you'll get rich that way, but you'll be better off than 90% of the worlds population.
These are the very things that attract the "good" immigrants here (so the RATS in the senate can filibuster them).