The US is a nation of immigrants. Everyone living the the US is either an immigrant or a decendent of immigrants. Therefore the US has no right to keep anyone out of its country.
I respond to that fallacious argument in the essay, referenced: Immigration & The American Future. We should not, of course, just blame foreigners for having that distorted view. American Leftists have prattled similar nonsense in their effort to undermine our sense of whom we are. (See The Battle Over Patterns Of Personal Identification.)
The fallacy that I ridicule in saying that a nation is not a game of musical chairs runs into a lot of issues other than just immigration. It needs to be laid to rest.
William Flax