Adam was the original immigrant for he was created by God out of the uncursed earth and then placed in the paradise
Gen 2
7 And the Lord God formed man of the slime of the earth: and breathed into his face the breath of life; and man became a living soul.
8 And the Lord God had planted a paradise of pleasure from the beginning: wherein he placed man whom he had formed.
So, with Holy Writ as our guide, our immigration policy should be only men who are children of God - Baptised - are eligible for immigration.
(Roman Catechism) Definition Of Baptism
With regard to the definition of Baptism although many can be given from sacred writers, nevertheless that which may be gathered from the words of our Lord recorded in John, and of the Apostle to the Ephesians, appears the most appropriate and suitable. Unless, says our Lord, a man be born again of water and the Holy Ghost, he cannot enter into the kingdom of God; and, speaking of the Church, the Apostle says, cleansing it by the laver of water in the word of life. Thus it follows that Baptism may be rightly and accurately defined: The Sacrament of regeneration by water in the word. By nature we are born from Adam children of wrath, but by Baptism we are regenerated in Christ, children of mercy. For He gave power to men to be made the sons of God, to them that believe in his name, who are born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.
Sure, that would mean excluding Mahometans which means our daughters would not be raped by them and our fellow citizens would not be targeted and killed by them, but, eventually, we would get used to the loss of that multicultural influence.
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