Right now, it's a fact. End illegal immigration, and our population starts declining--and it will get worse in the out years, because America as a whole is aging (and thus passing into demographics with higher mortality rates AND lower fertility rates, a double hit on population figures).
There are millions of people around the world who have applied for U.S. citizenship. We should bring these people in faster
Unfortunately, you now have to deal with "friendly fire." Many who favor greater stringency against ILLEGAL immigration also want LEGAL immigration sharply curtailed or ended.
Quite possibly, that is a misperception on your part. All week long, I've been accused of being "anti-immigration" simply because of my anti-ILLEGAL-immigration stance. Loads of Freepers are confusing these two positions.