There has been ample documentation and tons of links-on this thread, as on other related threads-and it hasn't done anything to persuade the FROBLs here that they might just be wrong.
Do you know why?
Because they do not base their beliefs upon any empirical data, or tangible, documented facts, but rather on an illusory faith.
We could provide you with copious data demonstrating the deleterious impact untrammeled immigration has on our economy and our society.
We could post study after study conducted by Professor George Borjas, demonstrating that mass immigration did not have a net positive effect on our economy.
We could cite Camorata, and Huntington, and Brimelow, and it would not make a whit of difference, because the belief in open borders is akin to religious dogma, not something that can be disproved by such inconsequential things as "facts."
This is why I can't understand the people here who try to argue with Creationists.
I suppose on some level you have to grudgingly admire their tenacity, but what is the point?
You're arguing with people who believe that the planet is less than 6,000 yrs. old.
It's as absurd as trying to convince some FROBL that importing 20+ million people from backwater, economically undeveloped, third world nations is a wise idea.