It is only perfectly right and good if it extends as much to the least ones as to ourselves.
Such as working class Americans who just want a future for their children.
You know the story of the Good Samaritan–the Jews would have nothing to do with Samaritans–and how the scholar of the law wished to justify himself and asked, “Who is my neighbor?”
Our Lord told him the story of the priest and the Levite and the Samaritan and of course asked at the end:
Which of these three, in your opinion, was neighbor to the robbers’ victim?”
He answered, “The one who treated him with mercy.” Jesus said to him, “Go and do likewise.”
The interesting thing about the Good Samaritan is that he helped the robbery victim our of his own resources. He didn’t go back to Samaria and declare that his country had to destroy itself because of the man’s misfortune.
Perhaps we should allow anyone who wants to to come here, but require them to settle in the neighborhoods of wealthy Democratic donors.
Our Lord never invented some idea of “piety” that superceded that.
"
I answer that, Man becomes a debtor to other men in various ways, according to their various excellence and the various benefits received from them. on both counts
God holds first place, for He is supremely excellent, and is for us the first principle of being and government. On the second place, the principles of our being and government are our parents and our country, that have given us birth and nourishment. Consequently
man is debtor chiefly to his parents and his country, after
God. Wherefore just as it belongs to religion to give worship to
God, so does it belong to piety, in the second place, to give worship to one’s parents and one’s country.
The worship due to our parents includes the worship given to all our kindred, since our
kinsfolk are those who descend from the same parents, according to the
Philosopher (Ethic. viii, 12). The worship given to our country includes homage to all our fellow-citizens and to all the friends of our country. Therefore piety extends chiefly to these." - Summa Theologica II-II.101.1
How is their culture some kind of an invasion?
In order to be real, a culture must have a space of some sort within which it is unquestioned. We can’t have that if there are a non-trivial number of foreigners around.