I keep hearing about how immigrants are necessary because they do the work Americans won't do. It's a lame argument in the immigrant debate because it's degrading and also false. As the American economy grows, it needs workers. New supplies of workers are come in from other countries and fill whatever job they can. It is NOT work Americans won't do (we've been doing it for generations), it is work that is AVAILABLE for new immigrants and easy to obtain. The English had a similar attitude toward the Irish in the 19th century. The English (and many scholars since then) insist that the Irish came in to fill jobs the English wouldn't do. That statement completely ignores the fact that industrial England had already been built on the backs of low paid English laborers. So, all at once the English were too good for those jobs so they needed the Irish? Immigrants go where there is opportunity. Opportunity is based on economic growth, not on whether the natives are too good for certain jobs.