In his masterwork, the Summa Theologiae, St. Thomas Aquinas argues that a nation has a moral duty to regulate its borders to preserve the common good and cultural unity.
If the whole world is your neighbor, what does that make the person standing next to you?
Catholics can welcome and assimilate foreigners without surrendering prudence. All nations of the world are more than just an economic zone. And a "level playing field" does not demand that we accept the foreigner merely on the proposal that they will be an economic benefit to our GDP.
The furnace of modernity makes building a Catholic society hard enough without the added trials of multicultural, multi-religious tribalism.
Our mission
Charity, prudence, and cultural unity
We help Catholics think clearly about borders: show Christian dignity to foreigners, reject open borders as a moral necessity, and protect the common good without being driven by suicidal empathy.