don't know about you, but I don't really want 1 billion people in the country. I just think it would become a little overcrowded, but w/e I guess. Wether or not we can handle that many immigrants doesn't matter, but we're talking about illegals. Let me ask you, what happens if let's say the US population jumps and like 50% or more become spanish. Not that I don't like the spanish, but it would change this country, at least I would think. Spanish might eventually become the official language and so forth. At least in china, those billion are mostly asian right? Sure they have a lot of different groups, but like 90% of the population belongs to one ethnic group there. Our country is divided between so many ethnic groups, I just feel like a balance should be kept, so one doesn't overpower the rest. Hence, we can't just let immigrants come in as they please.
Read this quote from the US cencus: "The US Census Bureau projects that by the year 2050, ethnic minority groups such as African Americans, Hispanic, and Asia and Pacific Islanders will compose almost half of the US population."
I'm part of those minority groups, and I don't mind a mixture in this country. I just don't want one group to become so large that the country has to adapt for them, I think it's fine the way it is (sure it has its flaws, but everyone does).