None the less we are all immigrants , less we forget. Granted the system in place now can't support an overload of immigrants. The system in place 100-300 years ago didn't assist immigrants. Either you hustled and fed your family or you all starved.
Nope, most of us were born here. My ancestors were immigrants; I am not. Does anyone really think any of the countries your ancestors came from would consider you a citizen two, three, twelve generations later? Try to get into them with the required documents, they will consider you to be there illegally.
