Again I must ask, WHAT THE FUCK ARE YOU TALKING ABOUT? The jobs the immigrants fill are ones no one else will do (e.g, menial labor; service industry positions). In regard to skilled labor—such as that required by modern day manufacturing—those jobs are entirely determined by the industry, not by the labor pool.
Iow, all workers find their own jobs; all employers offer only the jobs they need filled. If you can’t get a job at the factory, then you will have to come up with some other means to work, such as taking the jobs that no other Americans (iow, “white people”) will take or start your own business, which is what has traditionally been the role most immigrants have filled (entrepreneurial). Precisely because other positions had already been filled.
You seem to be under the impression that industry is somehow required to hire everyone that shows up.
The reality is wages will drop until society approaches full employment.
What "reality" are you basing this upon? Certainly not anything that has historically happened in America, such as when an influx of Irish or Italian immigrants flooded our shores. They too took the menial jobs no one wanted, but wages certainly didn't drop "until society" approached "full employment."
We have never seen it because we've never been so stupid as to put ourselves in that position.
Horseshit. Until only relatively recently—1921 to be precise, with the passage of the Emergency Quota Act—we have had an essentially open border policy when it came to immigrants. It is in fact what built America from its earliest colonists up until 1921.