From Harry Binswanger, adding a voice to the discussion here about the supposedly negative effect of immigration on the wages of low-skill American workers, particularly African-Americans:
Should we fear the future effect on workers when an American family has its third child? The logic of the anti-immigrationists would require either limiting family size to two children. Or maybe deporting any "extra" children, to "protect" the wages of labor in the future. It's absurd.