Blood citizenship should always take precedent over jus soli

The argument

This argument holds that a person's right to choose where they live should be grounded in heritage, and that citizenship by descent — jus sanguinis, the law of blood — should take precedence over jus soli, citizenship granted merely by the place of one's birth. On this view, nationality is fundamentally a matter of belonging to a people with a shared ancestry, language and culture, not an accident of which territory one happened to be born in. A person whose grandparents emigrated from Ireland or Italy retains, in this conception, a genuine and inherited connection to that nation that a person born on its soil by happenstance, with no cultural tie, does not. Proponents note that citizenship of descent is already commonplace: many countries, including Ireland and Italy, grant nationality to the descendants of emigrants, recognising that the bonds of family and heritage cross borders and persist across generations. The diaspora of a nation, on this argument, remains part of it. Where this argument goes further is in holding that such ancestral claims should be strengthened and extended, so that anyone with a real blood connection to a country has an unobstructed right to live there, while birthplace alone carries less weight. The underlying principle is that belonging should follow lineage and culture rather than the geography of birth. A nation is its people and their inheritance, the argument runs, and the right to live among them properly belongs first to those who share that inheritance. Because heritage is the truest basis of national belonging, this argument concludes, blood citizenship should always take precedence over jus soli — and people with such ancestral ties should be free to choose to live in the country of their descent.

Premises

Counter-arguments

Critics reply that making blood descent "always take precedence" over birthplace revives an ethnic conception of nationhood that most liberal democracies have moved away from for good reason. Jus soli exists precisely to prevent hereditary exclusion — to ensure that people born and raised in a country, who know no other home, are full members regardless of ancestry — and privileging bloodline would strip belonging from long-settled residents while granting it to distant descendants with no real tie. Defining a nation by shared ancestry, they argue, tends toward excluding minorities and creating statelessness, and lived participation in a society is at least as genuine a basis for belonging as inherited lineage.

Rejecting the premises

[Rejecting P1] Defining nationality by ancestry rather than birthplace revives an ethnic conception of nationhood that excludes long-settled residents who know no other home. [Rejecting P2] That some states grant descent-based citizenship shows heritage can be one route to belonging, not that it should always override the birthplace ties jus soli protects. [Rejecting C] Prioritising bloodline risks exclusion and statelessness, and lived participation is as genuine a basis for belonging as lineage, so blood citizenship should not always take precedence.