What does the Church say about immigration?

The first question is one of right. Is there a "right to emigrate"? The Church answers yes, while immediately specifying its foundation, scope and limit. This right is not a whim of liberty: it flows from the dignity of the person and from the common purpose of the goods of the earth.

The right to emigrate in search of a dignified life

This right was already taught by Pius XII as a natural right: in the apostolic constitution Exsul familia (1952), he recalls having condemned the ideologies — totalitarianism, imperialism, immoderate nationalism — that arbitrarily restrict "the natural right of men to emigrate"^[8]. Pope John XXIII, in his encyclical Pacem in terris (1963), takes up this teaching — he himself refers, in a note, to Pius XII's 1952 Christmas radio message — and places it among the fundamental rights of the human person:

"Every human being has the right to freedom of movement and of residence within the confines of his own State. When there are just reasons in favor of it, he must be permitted to emigrate to other countries and take up residence there." — John XXIII, Pacem in terris, April 11, 1963, § 25^[9]

The foundation is not a demand but an anthropological fact: man is not the property of the state in which he was born. His dignity and vocation overflow borders. When his life, safety or subsistence are gravely threatened where he is -- war, persecution, misery, disaster -- he has the right to seek elsewhere the conditions of a dignified existence. This is what the Church calls the right to emigrate^[10].

This right, however, has a measure: "when there are just reasons." It is not an indeterminate right to settle wherever one prefers for reasons of mere convenience, but the right to flee an undignified situation. And, like every right, it calls for a corresponding duty among those who can welcome; otherwise it would remain a dead letter.

The foundation: the universal destination of goods

Why should a man born on one side of a border have any claim to seek his subsistence on the other side? Because, according to the Catholic faith, the earth ultimately belongs to no one in an absolute way: it is given by God to all humanity. This is the principle of the universal destination of goods, the foundation of all social doctrine.

"In the beginning God entrusted the earth and its resources to the common stewardship of mankind... The goods of creation are destined for the whole human race." — Catechism of the Catholic Church, § 2402^[11]

This principle suppresses neither nations nor property, but it relativizes them: they are secondary in relation to every person's right to find what is needed to live. A border is not a sacred absolute that could, by itself, justify letting the foreigner in search of necessities die. The same logic governs Catholic teaching on money: one may possess legitimately, but under a "social mortgage" that orders one's surplus to another's need. Applied to peoples, this principle grounds a duty of international solidarity, of which the welcome of migrants is one expression.

The "right not to emigrate": remaining in one's homeland

The doctrine would be incomplete if it recognized only a right to leave. Most forced migrants do not choose exile: they are driven into it by war, persecution or misery. The Church therefore also affirms, symmetrically, a right not to emigrate: the right to be able to live with dignity at home, without being torn from one's land, language and family.

Pope Francis (2013-2025) has made this point a key to his reflection: exile is not first an opportunity; it is often a wound. Those who emigrate "live apart from their surroundings of origin and often experience cultural and religious uprooting"; the communities of departure lose "their most vigorous and enterprising elements", and families are torn apart^[12]. The practical consequence is decisive: the first charity toward poor peoples is not only to open doors, but to make emigration unnecessary by attacking its causes, as the final part of this article explains.

Before any modern magisterium, the doctrine of welcome is rooted in Scripture. The stranger -- ger in Hebrew, the resident immigrant -- is the object of a special divine protection, alongside the orphan and the widow: the three figures of the vulnerable person without social support. In the New Testament, Christ himself identifies with him.

"Love the immigrant, then": the Law protects the stranger

The Law of Moses does not merely tolerate the stranger: it commands Israel to love him, and grounds this commandment in the memory of slavery in Egypt. The people who once lived as migrants must know what the migrant lives.

"He [the Lord] renders justice to the orphan and the widow, loves the stranger, giving him food and clothing. Love the stranger, then; for in the land of Egypt you were strangers." — Book of Deuteronomy 10:18-19^[13]

Leviticus goes still further: it forbids the exploitation of the stranger and requires him to be treated on an equal footing with the Israelite born in the country.

"The alien who resides with you shall be to you as the citizen among you; you shall love the alien as yourself, for you were aliens in the land of Egypt." — Book of Leviticus 19:34^[14]

The requirement is remarkable for antiquity: protection of the foreigner is not vague benevolence, but a divine law with a moral reason: identification with the one who has suffered. This "for in the land of Egypt you were strangers" runs through all Scripture and still grounds the Christian attitude toward the migrant.

The Holy Family, refugees in Egypt

Christianity does not contemplate migration from the outside: its own God experiences exile. Shortly after Jesus' birth, warned in a dream of Herod's fury, Joseph takes the Child and his mother and flees by night to Egypt, where the Holy Family remains until the tyrant's death^[15]. The Son of God thus begins his earthly life as a political refugee, saved from a massacre by flight into a foreign land.

This Gospel page has nourished the whole Catholic spirituality of welcome. Pius XII made it the very title of the great magisterial charter for the pastoral care of migrants, Exsul familia -- "the Exiled Family": the Holy Family fleeing into Egypt is presented there as the "model, example and consolation of emigrants"^[16]. For the Church, therefore, the migrant is not an abstract problem: he bears the features of the Christ Child whom his parents protected through exile.

"I was a stranger and you welcomed me"

The summit of biblical teaching is found in the great discourse on the Last Judgment, where Christ reveals that he identifies with the least -- and explicitly names the stranger among the figures in whom he hides:

"For I was hungry and you gave me food, I was thirsty and you gave me drink, a stranger and you welcomed me." — Gospel according to Saint Matthew 25:35^[17]

This text makes the welcome of the stranger a criterion of salvation: what one does, or refuses to do, to the migrant, one does to Christ himself. Hospitality is therefore not, in Christianity, a secondary virtue of politeness: it engages one's relationship with God. The patristic tradition hammered this home: to receive the stranger is to receive the Lord. From this conviction arose, over the centuries, the Church's immense work of hospitality: hospices, xenodochia, refuges and asylums opened to travelers and exiles.

From the right to emigrate there follows, in mirror image, a duty to welcome among those who can. But is this duty absolute? Does it bind at any price? The Church answers with a very precise formula, containing both the obligation and its measure.

The heart of the doctrine: Catechism § 2241

The reference text is paragraph 2241 of the Catechism of the Catholic Church. It must be quoted in full, because one half is too often isolated to serve a thesis. Its first part states the duty to welcome:

"The more prosperous nations are obliged, to the extent they are able, to welcome the foreigner in search of the security and the means of livelihood which he cannot find in his country of origin. Public authorities should see to it that the natural right is respected that places a guest under the protection of those who receive him." — Catechism of the Catholic Church, § 2241^[18]

Three elements are decisive. First, the duty is real: nations are "obliged" to welcome; it is not an optional charity, but a moral obligation. Second, it is proportionate: "to the extent they are able"; the obligation is measured by real capacity to receive, not unlimited. Finally, it primarily concerns the migrant in distress, "in search of the security and the means of livelihood" he cannot find at home: the refugee, the persecuted, the hungry, before the migrant of mere convenience.

Pope Francis's four verbs (2013-2025)

Pope Francis (2013-2025) has summarized the whole pastoral care of migrants in four verbs, which have become a practical framework throughout the world. He proposed them on February 21, 2017, before the International Forum "Migration and Peace", then developed them in his Message for the 2018 World Day of Migrants and Refugees^[19]. The encyclical Fratelli tutti (2020) takes them up to summarize the Christian response to the migratory challenge:

"Our response to the arrival of migrating persons can be summarized by four words: welcome, protect, promote and integrate." — Pope Francis, Fratelli tutti, October 3, 2020, § 129^[20]

Each verb specifies a concrete stage. Welcome means opening safe and legal paths of entry, according to each country's capacity. Protect means defending the rights and dignity of the person against trafficking, exploitation and contempt. Promote means fostering the migrant's integral development: language, formation, work, family life. Integrate means bringing him into common life, in an exchange where he both receives and gives. These four verbs exclude both indifference, which does not welcome, and laissez-faire, which welcomes without protecting or integrating.

Two millennia of magisterium

The doctrine on migration is not a progressive novelty: it runs from the Holy Family in Egypt to the great social encyclicals, with remarkable continuity. The twentieth century, marked by massive displacements of population, merely systematized it.

This continuity clarifies a point often misunderstood: on this subject, there is no recent "left-wing doctrine" opposed to an older tradition. The duty to welcome and the legitimacy of regulation are taught together, in the same movement, from the beginning. It is their separation -- welcome without limit, or border without duty -- that would constitute a rupture.

This is the most controversial question, and the one where the Church's thought is most often distorted. Does the duty to welcome mean the total and unconditional opening of borders? The doctrine's answer is clear: no. The same paragraph that imposes welcome recognizes the right of states to regulate it.

The right of states to regulate migratory flows

The second part of Catechism § 2241, too often omitted, states this right clearly:

"Political authorities, for the sake of the common good for which they are responsible, may make the exercise of the right to immigrate subject to various juridical conditions, especially with regard to the immigrants' duties toward their country of adoption." — Catechism of the Catholic Church, § 2241^[21]

The Church therefore recognizes that political authority has a proper competence to regulate immigration, in the name of the common good it is charged to serve. The Compendium of the Social Doctrine of the Church goes in the same direction: it sees this regulation as an indispensable condition for the insertion of migrants to take place with respect for their dignity:

"Institutions in host countries must keep careful watch to prevent the spread of the temptation to exploit foreign labour... The regulation of migratory flows according to criteria of equity and balance is one of the indispensable conditions for ensuring that insertions take place with the guarantees required by the dignity of the human person." — Compendium of the Social Doctrine of the Church, § 298^[22]

The common good is not a selfish pretext: it includes real capacity to receive, employment, housing, social cohesion, public order and the possibility of dignified integration, without which welcome would turn against those welcomed themselves. Regulation is therefore not a betrayal of charity: it makes charity possible and sustainable. A welcome exceeding every capacity for integration would produce misery, marginalization and rejection: the opposite of the good sought.

Migrants' duties toward the host country

The doctrine does not impose duties only on nations: it also assigns duties to migrants. The third part of § 2241 is unambiguous:

"Immigrants are obliged to respect with gratitude the material and spiritual heritage of the country that receives them, to obey its laws and to assist in carrying civic burdens." — Catechism of the Catholic Church, § 2241^[23]

Three duties, then: respect the heritage, including the spiritual and cultural heritage, of the host country; obey its laws; contribute to its burdens, that is, share in the common effort through work and taxes. Integration, the last of Francis's four verbs, is here a shared responsibility: society receives, but the migrant also commits himself. Reciprocal gratitude -- the host who opens, the guest who respects -- is the condition of successful coexistence.

Ordered charity, neither laxism nor contempt

Catholic teaching thus stands at equal distance from two symmetrical ideologies. One absolutizes openness and denounces every border as injustice; the other absolutizes closure and makes the nation an absolute before which the foreigner would have no claim. The Church rejects both. Her position is not a soft compromise, but ordered charity: a real love of the migrant, measured by prudence and the common good.

We can therefore see that a faithful Catholic may support firm regulation of immigration without contradicting his faith, provided that this regulation remains in service of the common good and never becomes contempt for the person, xenophobia or abandonment of the person in distress. Conversely, he cannot, in the name of sovereignty, deny every duty to welcome those fleeing death.

Because the subject is politically explosive, several persistent misunderstandings deserve to be removed directly. The doctrine says neither what its critics want to make it say, nor what some hurried supporters sometimes draw from it.

Does the Church impose the total opening of borders?

No. No magisterial text teaches the abolition of borders or unlimited welcome. The Catechism expressly recognizes the right of states to make immigration subject to juridical conditions in the name of the common good^[24]. Pope Francis himself, often caricatured as a supporter of unrestricted openness, specified that this duty to welcome must be exercised with the prudence proper to the ruler, taking account of each country's real capacity to receive and integrate^[25]. The duty to welcome and political prudence are not opposed: they complete each other.

Can one be Catholic and want to limit immigration?

Yes. Wanting immigration to be regulated is not in itself a sin or a betrayal of the Gospel: it is a position the doctrine recognizes as legitimate, provided that it aims at the common good and respects the dignity of persons. What is excluded is not regulation, but two excesses: on one side, indifference to the person fleeing death; on the other, hatred of the foreigner, racism and the reduction of the migrant to a threat. Between naive welcome and brutal rejection, the Church traces a path of responsibility: truly welcome those one can welcome, integrate them with dignity, and work so that others will not have to leave.

Addressing the causes: the right not to have to leave

This is the final point of the whole doctrine. The best migration policy is not only the one that welcomes well: it is the one that makes exile unnecessary. Benedict XVI recalled that "no country can be expected to address today's problems of migration by itself", since they require "a strong and forward-looking policy of international cooperation"^[26]. To struggle against war, persecution, misery and corruption in countries of departure, so that each person can live with dignity on his own land, is the highest form of charity toward peoples. The duty to welcome the migrant and the duty to make it possible for him to remain do not oppose each other: they are two faces of the same love for man, wherever he was born.

"Building conditions of peace, with respect to migrants and refugees, means being seriously committed to safeguarding first of all the right not to emigrate, that is, the right to live in peace and dignity in one's own country." — John Paul II, Message for the 90th World Day of Migrants and Refugees, 2004, § 3^[27]

• What does the Church say about nationalism? — rightful love of one's homeland and its idolatry.
• What does the Church say about politics? — the Catholic's temporal engagement and prudential discernment.
• What does the Church say about work? — just wages and the dignity of the worker, including the foreign worker.
• What does the Church say about money? — the universal destination of goods, the shared foundation of social doctrine.
• What does the Church say about just war? — war, a first cause of forced exile.