A free country must welcome as many immigrants as want to enter it, no matter the effect they have on its culture or its political institutions. This is the liberal immigration premise. It is sincerely held by Americans all across the political spectrum. And, as I argued in my last piece, it is false.
Another premise underlying the current push toward open borders in the U.S., this one held mostly by the Left, is the idea that a multicultural society is superior to a culturally homogeneous one. It implies that America would be a better country if its once-unified, English-speaking culture were transformed into a polyglot mosaic by the mass infusion of immigrants. This premise is false for the same reason that the liberal immigration premise is false.
In the history of the world, very few cultures have proven capable of sustaining the kind of freedom we enjoy in the United States. We cannot possibly strengthen, or even hope to maintain, the support that our free political institutions enjoy by continually adding to the voting population large numbers of persons from cultures that afford them little or no knowledge of the ideas necessary to sustain those institutions. This is especially true when multiculturalists urge immigrants not to assimilate, which means that they should not shed their old ideas, ideas which, in many cases, issued in poverty, corruption, and tyranny in their countries of origin.
America is the land of individual rights. Immigrants from tribal cultures, from cultures that place the welfare of the family or the clan above that of the individual, cultures that are socially or economically static, that value the pronouncements of religious leaders over those of secular leaders, or that view women as inferior to men-all must learn new values upon arriving in the U.S. Otherwise, if the immigrants come in sufficient numbers, we must resign themselves to seeing our rights eroded and our free political institutions degraded.
No society ever failed because it was too culturally unified. But a great many have dissolved into violence because they were not. Today Basques want to secede from Spain, Kurds from Turkey, Syria, and Iraq. Serbs, Armenians, Albanians, and many other cultural minorities seek to establish their own, monocultural countries because the multicultural societies of which they are a part do not work. To transform a culturally unified society into a multicultural one is to introduce a potential for conflict that did not exist before. Imagine a completely Catholic Northern Ireland deciding to improve their country by importing Protestants.