I am left to wonder where all that is coming from...
Nobody on this forum, as far as I can tell, is against immigration - meaning the legal kind. You might be trying to run away from hell itself; you are still breaking the laws of this country if you enter and stay illegally. So, that's no excuse especially since there are hundreds of thousands out there that go through the legal channels every year, and they certainly do not come from the Garden of Eden either.
There is a completely separate argument about legal immigration quotas, and reasonable people can disagree on the exact numbers. The only people that mix illegal and legal immigration are of two varieties: 1) the mentally negligent, and 2) sly propagandists that want to forward their agenda in the mirky water.