You are out of your mind if you think immigration is BAD. The mistake being made in Europe is the maintenance of tight immigration controls. The US is quite competitive and exciting very much DUE to our immigration policies rather than IN SPITE of it. Check out Zakaria's article http://globalpublicsquare.blogs.cnn.com/2011/06/28/america-risks-losing-its-immigration-advantage/
Compettion relying on immigration can not go one forever and is not sustainable forever. It is more like a family never had children or very little children and always depend on adoption. There is nothing wrong with that but giving birth to one's own children should be the first choice.
Seriously. You benefit from it, and then you want to shut it down. Does it remind you of anyone? Maybe the 'native born' Americans whose ancestors came here sometimes only decades rather than centuries ago. How quickly we forget.
I have repeatedly said it is hypocracy for anyone to turn against immigration once immigration is done but just as you said, if you want
to be upright completely, this land shoudl rbe restored to native Americans and everyone else should pack up and leave. and since
no one do that so moral is not the issue here to discuss.