This is an oft stated objection to controlling our borders. We use to have land grants and deliberate attempts by both individual states and the federal government to populate the land. Industry did indeed concentrate people in cities and of course UN programs like Agenda 21 turned that into a socialist priority. The US no longer sponsors any land settlement programs and just so you might get an understanding of your comment, it takes about 1.5 to 2 acres of land to feed an individual, so all of that ‘underpopulated land’ is used to support the very over populated urban areas… From trees and energy to food… it all comes from those 'underpopulated lands.
You didn’t however answer my question… How many is too many and how do you control that number? Is our our sovereign land mass nothing more than a sponge to soak up the excesses in population from the rest of the world? Do we own the segments of the world who can’t feed themselves some service because we sent them just enough aid to become healthy enough to continue to expand the world population?
I think that liberals have played the skin color thing about as far as it will go. Yeah, I know that it is a good advertising point to say that the right are racist, but deep down in side, you know that 1) their are as many closeted racists and homophones that are democrats as their are overt ones that are on the right. 2) race is really not the issue… but culture most certainly is. Their are many neighborhoods and neighbors that share boundary lines and schools with each other that get along perfectly fine… the friction is not race it is the cultural norms we ‘like’… yes, we have preferences and individuals and as a nation. (they are trying hard to get Koreans to stop selling dog meat during the Olympics)
I said 40 years ago that the next big test in the US would be the first amendment right of religious freedom. It was, not unlike blacks at the time and only gentried men the ability to vote, Christianity that they considered the center of the universe and the norm for civilized society. Certainly Jonestown was never on their radar nor was Sun Myung Moon and his Moonies. (I almost found myself hauled away by that group… all for the eyes of a very alluring girl). Some religions 1) have very different cultural norms than we… and at the end of the day, if we invite them to our country, they should want to be part of our culture, not work do destroy it… and 2) some religions like Islam tie the spiritual conduct of the individual with a government that lives by its bible… You might not like our culture but rather than supporting a hord of invaders to change it for you, you need to persuade people around you to be different.
The last thing I would say with respect to integration in American culture. immigration today is is no where near the same as immigration of the past. People had to break with their families to come to the US. Communications and cultural connection to the ‘old world’ took weeks and months unlike the instantaneous connection and the ability to transfer assets and speak and relate in real time… Not so any more and the affect on our culture is much more impactful then it use to be. Americans have a right to expect that the flavor that a new culture will bring to it will be not only one that it wants but one that it has an absolute right to reject. The left seem to be fawning over an alliance with Islam but the fact is, Islam wants to change the governance of the US. The left will say ‘Auh but we have the Constitution to prevent that’… and I just laugh and say that the left has world tirelessly to relegate that old document to the dust bin and when the protections are gone…?