Jus soli is the predominant rule in theAmericas; explanations for this geographical phenomenon include: the establishment of lenient laws by past European colonial powers to entice immigrants from theOld World and displace native populations in theNew World, along with the emergence of successful wars of independence movements that widened the definition and granting of citizenship, as a prerequisite to the abolishment of slavery since the 19th century.[5]
There are 35 countries that provide citizenship unconditionally to anyone born within their national borders.[6][7] Some countries outside the Americas with mixed systems extendjus soli citizenship on a limited basis to children who are not otherwise eligible for any national citizenship, such as children born to women who are unwed or from countries that do not recognize maternaljus sanguinis citizenship.[8][9] Others impose a residency requirement requiring parents to live in the country for a certain number of years before children born in the country become eligible for conditionaljus soli citizenship.[10] These mixed systems were implemented to fulfill treaty obligations after the atrocities ofWorld War II increased awareness about the vulnerability ofstateless persons.[11] When the sovereignty over a territory is transferred from one state to another, individuals may be given the right ofoption of nationality based onjus soli or other rules.[12]
As of 2025, Canada and the United States are the only advanced economies (according toIMF) of the world that still grant unrestricted birthright citizenship, including to children fromillegal immigrant parents.
Jus soli, sometimes calledlex soli, is the principle of citizenship acquired by the place of birth. Children born to a parent in the diplomatic or consular service of another state are often not eligible forjus soli citizenship in a host State.[13][14]
Unconditionaljus soli is mostly found in the Americas. Some countries outside the Americas with mixed systems extendjus soli citizenship on a limited basis to children who are not otherwise eligible for any national citizenship, such as children born to women who are unwed or from countries do not recognize maternaljus sanguinis citizenship.[8][9] Others impose a residency requirement requiring parents to live in the country for a certain number of years before children born in the country become eligible for conditionaljus soli citizenship.[15]UNHCR gives ten reasons for why people become stateless including laws related to marriage, administrative practices, renunciation of citizenship and nationality laws that discriminate on the basis of gender.[16]
A map of parties to the Convention on the Reduction of Statelessness. Parties to Convention in dark green; countries which have signed, but not ratified in light green; non-members in grey.
Countries that have acceded to the 1961Convention on the Reduction of Statelessness are obligated to grant nationality to people born in their territory who would otherwise becomestateless persons.[17][a][16] These mixed systems were implemented to fulfill treaty obligations after the atrocities ofWorld War II increased awareness about the vulnerability of stateless persons.[11][19]
TheAmerican Convention on Human Rights similarly provides that "Every person has the right to the nationality of the state in whose territory he was born if he does not have the right to any other nationality."[18]
TheNew Oxford American Dictionary defines birthright citizenship as "a legal right to citizenship for all children born in a country's territory, regardless of parentage".[20] In the United Statesjus sanguinis is not a constitutional right or a birth right.[21] Citizenship byjus sanguinis is a legal status conferred by statute. The term birthright citizenship usually meansjus soli citizenship.[22]
Birthright citizenship is rooted in colonial history when settlers born in the colonial United States were considered "natural born" subjects of the King of England. The idea of conferring citizenship based on being born within the borders of the United States comes from this history.[23][24] Allegiance based onnatural law principles was the core concept of citizenship inCalvin's Case in whichEdward Coke said that "they that are born under the obedience, power, faith, ligealty or ligeance of the King are natural subjects and no aliens".[25] The American concept of citizenship is derived from republican principles and may have been influenced by the French writerEmer de Vattel.[24]
Canada: Subsection 3(2) of the Citizenship Act states that Canadian citizenship by birth in Canada – including Canadian airspace and territorial waters – is granted to a child born in Canada even if neither parent was a Canadian citizen or permanent resident except if either parent was a diplomat, in service to a diplomat, or employed by an international agency of equal status to a diplomat. However, if neither parent was a diplomat, the nationality or immigration status of the parents does not matter.[34] Some Conservative Party members wish to end birthright citizenship in Canada for the children of tourists and illegal immigrants.[35]
Costa Rica:Jus soli requires registration with the Costa Rican government before the age of 25.[36]
Mexico: Article 30 of theConstitution of Mexico states that persons born in Mexican territory are natural-born citizens of Mexico regardless of their parents' nationality. The definition of "territory" includes vessels/aircraft flagged to Mexico travelling in international waters or airspace.[30][39]
United States: TheCitizenship Clause of the14th Amendment to theUnited States Constitution, ratified in 1868, provides: "All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside."[42] The concept of birthright citizenship applying to the child born of a foreign national in the country without proper credentials has never been formally litigated, but the U.S. Supreme Court's decision inUnited States v. Wong Kim Ark (1898) allowed the government to deny citizenship to U.S.-born children only in the cases of children born to foreign diplomats and children born to enemy forces engaged in hostile occupation of the country's territory, and, thus, this decision is most often interpreted as barring the government from denying citizenship to those born in the U.S. based on the alienage of their parents.[43][44] (SeeUnited States nationality law.)
On 20 January 2025, PresidentDonald Trump, as part of hisAgenda 47, signed anexecutive order aiming to end the practice of birthright citizenship.[45] The order mandates for at least one parent to be a U.S citizen or lawful permanent resident for persons born in the U.S to become U.S. citizens at birth.[46] The order was scheduled to come into effect on 19 February,[47] but on 23 January, a federal judge in Seattle was the first to block its enforcement after referring it as unconstitutional.[48] Four federal judges have blocked the order.[49] Three federal appellate courts have upheld the judges blocks on the order.[50] On 13 March, the administration asked the Supreme Court to intervene to allow the order to move forward by challenging three judges injunctions.[51] On 17 April, the Supreme Court decided to hear oral arguments on 15 May to determine whether the administration can enforce the order while legislation continues by considering whether the judges exceeded their authority when they issued their nationwide injunctions.[52] On 27 June, by a 6-3 ruling the Supreme Court narrowed all judges injunctions on the order allowing the order to come into effect on 27 July.[53] Due to individuals, organizations, and twenty-two states suing to block the order it does not apply in twenty-two states and to individuals that are part of a class action lawsuit or in their individual case when certified by a judge.[54] On 10 July, a district judge in New Hampshire was the first to certify a class action lawsuit from immigration rights attorneys blocking the order indefinitely nationwide.[55] Four judges have blocked the order after certifying lawsuits from plaintiffs.[56] Two federal appellate courts have upheld blocks on the order due to the certification of class action lawsuits by ruling the order as unconstitutional.[57] On 26 September the administration asked the Supreme Court to review the constitutionality of the order.[58]
Brazil[30][59] (requires that the foreign parents are not working for their country's government in Brazil at the time the child is born).
Chile'sConstitution grants nationality to "those born in Chilean territory, with the exception of the children of foreigners who are in Chile in service of their government, and the children of transient foreigners, all of which, however, may opt for the Chilean nationality."[60][30][61]
Pakistan: Under the Pakistan Citizenship Act of 1951 passed by theConstituent Assembly of Pakistan on 13 April 1951[67] permits everyone born in Pakistan on or after that date to automatically receive Pakistani citizenship by birth except if they are the child of a foreign diplomat or enemy alien.[68] On 11 November 2024 the National Assembly of Pakistan passed a bill to restrict citizenship for children born to foreigners.[69] The bill would amend the Pakistan Citizenship Act of 1951 and would change the citizenship law by requiring every person born in Pakistan on or after 13 April 1951 to have at least one parent that is a citizen or a permanent resident of Pakistan in order to be granted Pakistani citizenship by birth or live in Pakistan for a period of 10 years from the date of their birth.[70]
There is a trend in some countries toward restrictingjus soli by requiring that at least one of the child's parents be a citizen, national or legal permanent resident of the state in question at time of the child's birth.[71] Modification ofjus soli has been criticized as contributing to economic inequality, the perpetuation ofunfree labour from ahelot underclass[71] andstatelessness.Jus soli has been restricted in the following countries:
Egypt: According to the nationality law of the Arab Republic of Egypt and its latest amendments, children born to an Egyptian father or an Egyptian mother acquire citizenship at birth, regardless of their place of birth. Additionally, children born in Egypt to unknown parents (or found abandoned at a young age) are granted citizenship at birth.[72][73]
Morocco: A person who was born in Morocco to parents also born in Morocco and whose immigration is legal, can register as a Moroccan two years prior to becoming adult.[74]
Namibia: A person born in Namibia to a Namibian citizen parent or a foreign parent who is ordinarily resident in Namibia, is a Namibian citizen at birth (seeNamibian nationality law).[75]
São Tomé and Príncipe: A person born in São Tomé and Príncipe acquires São Toméan nationality, as long as the parents are residents of the country. The only exception is if any of the parents have diplomatic immunity (seeSão Toméan nationality law).
South Africa:[71] Since 6 October 1995, a person born in South Africa to South African citizens or permanent residents is automatically granted South African citizenship (seeSouth African nationality law).
Sudan: A person born before 1994 gains Sudanese nationality at birth if his father was also born in Sudan. If his father was not born in Sudan, they can apply to the Minister to be granted Sudanese nationality.[76][77]
Tanzania:[27] TheTanzania Citizenship Act of 1995, states that "any child born within the borders of the United Republic of Tanzania, on or after Union Day, 26 April 1964, is granted citizenship of Tanzania, except for children of a father who has diplomatic immunity, or parents who were enemy aliens and the territory was under enemy occupation."[78] While Tanzania technically observes birthright citizenship, it is official practice that birth in Tanzania has to be further supported by descent from a Tanzanian parent to be recognized as a citizen by birth. This practice has gone uncontested in courts of law.[79]
Tunisia: Individuals born in Tunisia are citizens by birth if their father and grandfather were born in Tunisia. Additionally, the person must declare before becoming an adult (20 years) that they want to be a citizen.[80]
Dominican Republic:The constitution was amended on 26 January 2010. The amendment broadened the definition of the 2004 migration law – which excluded from citizenship children born to individuals that were "in transit" – to include "non-residents" (including individuals with expired residency visas and undocumented workers).[81][82][83][84][85][86]
Colombia: Article 96 of theconstitution grants Colombian nationality by birth provided that at least one of the parents is a Colombian national or a legal resident.[87] By presidential decree, in August 2019 nationality was granted to children of Venezuelan migrants born in Colombia regardless of residential status of their parents.[88]
Azerbaijan: Article 52 of the constitution of Azerbaijan states that a person born on the territory of the Republic of Azerbaijan is a citizen of the Republic of Azerbaijan. Although in practice that provision is not enforced and persons are only granted citizenship by right based on the other provision within the article that states a person whose one parent is a citizen of the Republic of Azerbaijan is a citizen of the Republic of Azerbaijan.[89]
Bahrain: Children born to a foreign father with valid residency permits who himself was born in Bahrain have right to citizenship.[90]
Cambodia: In 1996, Cambodia changed the law to grant citizenship to children born in Cambodia to foreign parents if both parents were born in Cambodia and are living legally in Cambodia (under Article 4(2)(a) of the 1996 Nationality Law).[91]
China: China has strict nationality laws that limitjus soli citizenship to children born to stateless parents who have settled in China.[92]
Hong Kong: Since the July 1997transfer of sovereignty over Hong Kong, most political rights and eligibility for most benefits are conferred to permanent residents regardless of citizenship. Conversely, PRC citizens who are not permanent residents (such as residents ofMainland China andMacao) are not conferred these rights and privileges. TheBasic Law provides that allcitizens of thePeople's Republic of China (PRC) born in the territory are permanent residents of the territory and have theright of abode in Hong Kong. The 2001 caseDirector of Immigration v. Chong Fung Yuen clarified that the parents need not have right of abode[93] and as a consequence many women from Mainland China began coming to Hong Kong to give birth. By 2008, the number of babies in the territory born to Mainland China mothers had grown to twenty-five times the number five years prior.[94][95] Furthermore, persons of Chinese ethnicity (wholly or partly) with PRC nationality born in Hong Kong are PRC nationals with Hong Kong permanent residence, even if their parents are non-PRC citizens (e.g. overseas-born Chinese).[citation needed] Non-PRC citizens born to non-PRC citizen Hong Kong permanent resident parents in Hong Kong also receive permanent residence of Hong Kong at birth. Other persons must have "ordinarily resided" in Hong Kong for seven continuous years in order to gain permanent residence (Articles 24(2) and 24(5)).[96]
Indonesia: Indonesian citizenship by birth includes those born anywhere whose parents are both Indonesian nationals, or any person born in Indonesia with at least one Indonesian citizen parent, or a child born in Indonesia to unknown parents, or those born out of wedlock. Citizenship can also be granted to a permanent resident who has lived in Indonesia for a given period of time through naturalization, as long as the parents are stateless, or unknown.[97]
Iran: Article 976(4) of the Civil Code of Iran grants citizenship at birth to persons born in Iran of foreign parents if one or both of the parents were themselves born in Iran. Article 976(5) People born in Iran of a father of foreign nationality who have resided at least one more year in Iran immediately after reaching the full age of 18; in other cases their naturalization as Iranian subjects will be subject to the stipulations for Iranian naturalization laid down by the law. New legislation passed by the Iranian Parliament in 2012 grants permanent residency to children born to Iranian mothers and foreign fathers. SeeIranian nationality law.[98]
Israel: Children born in Israel who have never acquired another citizenship are eligible to apply for Israeli citizenship between their 18th and 21st birthday if they have lived in Israel for over 5 years (seeIsraeli citizenship law).[99]
Japan: Children born in Japan to stateless or unknown parents are Japanese nationals at birth.[100]
Macau: Similar to Hong Kong, most political rights and eligibility for most benefits are conferred to permanent residents regardless of citizenship since the December 1999transfer of sovereignty over Macau, according to theBasic Law of Macau. Becoming a Macau permanent resident has slightly different requirements depending on an individual's nationality. Acquisition by birth operates on a modifiedjus soli basis; individuals born in Macau to Chinese nationals or to Portuguese citizensdomiciled there are automatically permanent residents, while those born to other foreign nationals must have at least one parent who possesses right of abode (seeRight of abode in Macau).[101]
Malaysia: A person born in Malaysia on or after 16 September 1963 with at least one parent being a Malaysian citizen or is automatically a Malaysian citizen (seeMalaysian nationality law).[102]
Mongolia: A person born in Mongolia to foreign parents with valid residency permits can apply for Mongolian nationality when they turn the age of 16. A child in Mongolian territory with unidentified parents can receive Mongolian citizenship (seeMongolian nationality law).[103]
Singapore: Singapore practices a restricted form of jus soli where only those born with at least one Singaporean parent will be granted citizenship, unless the father of the child is an enemy alien, a foreign diplomat or if the birth occurred in occupied territory. (SeeSingapore nationality law).[104]
Taiwan: Any child born to parents withTaiwanese citizenship, even those living abroad, can acquire Taiwanese nationality at birth. Children born in Taiwan to stateless parents or have unknown parentage are considered Taiwanese nationals at birth (seeTaiwanese nationality law).[105]
Thailand: Thailand operated a system of purejus soli prior to 1972. Due to illegal immigration from Burma, the Nationality Act was amended by requiring both parents to legally reside and be domiciled in Thailand for at least five years for their child to be granted Thai citizenship at birth.[106][107] Furthermore, someone who has Thai citizenship by sole virtue ofjus soli may be stripped of Thai citizenship under various conditions (such as living abroad), which does not apply to people who have Thai citizenship by virtue ofjus sanguinis.[108]
France: Children born in France (includingoverseas territories) to at least one parent who is either (i) a French national or (ii) born in France, are automatically granted French nationality at birth. Children born in France to foreign parents who do not fulfil either of these two conditions may acquire citizenship from age 13 subject to residence conditions (seeFrench nationality law). A child born in France to foreign parents becomes a French citizen automatically upon turning 18, provided that they reside in France on their 18th birthday and have had their primary residence in France for a total (but not necessarily continuous) period of at least 5 years since the age of 11. Children born in France to twostateless parents receive French nationality automatically at birth.[109]
Germany: Prior to 2000, Germany'snationality law was based entirely onjus sanguinis, but now children born in Germany on or after 1 January 2000 to non-German parents acquire German citizenship at birth if at least one parent has a permanent residence permit and resided in Germany for at least five years prior to the child's birth.
Greece: Apart from regulations in past and historic nationality laws of Greece granting nationalityjus soli,[110] theGreek Nationality Code of 2004 states that "A person born in Greek territory acquires by birth the Greek nationality if not acquiring alien nationality or is of unknown nationality".[111] Additionally, as from 2015's amendment of 2004 Code (Law 4332 of 2015, G.G. A/76/9 July 2015), a child born in Greece by foreign parents shall acquire the right of Greek nationality with a combination of primary school attendance and parents' legal residence in Greece (5 years, 10 if the child is born prior to 5 years of legal residence).[112] One year after the implementation of the law (as from July 2016), 6,029 children had been granted Greek nationality, out of 27,720 submitted applications.[113]
Ireland: In 2005,Irish nationality law was amended to require that at least one of the parents be an Irish citizen; a British citizen; a resident with a permanent right to reside in the Republic of Ireland or in Northern Ireland; or a legal resident residing three of the last four years in the country (excluding students and asylum seekers).[71] The amendment was prompted by the case ofMan Chen, a Chinese woman living inGreat Britain who traveled toBelfast (Northern Ireland, part of the UK) to give birth in order to benefit from the previous rule whereby anyone born on any part of theisland of Ireland was automatically granted Irish citizenship. The Chinese parents used their daughter's Irish citizenship (and therebyEuropean Union citizenship) to obtain permanent residence in the UK as parents of a dependent EU citizen. Ireland was the last country in Europe to abolish unrestrictedjus soli.[114]
Italy: The law that regulates this right is n. 91 of 5 February 1992. Article 4 paragraph 2 grants this possibility to a person born in Italy, who has legally resided there without interruption until reaching the age of 18, and becomes a citizen if they declare that they wish to acquire Italian citizenship within one year from the aforementioned date. They can make use of this right by submitting a simple declaration of will to the Civil Status Office of their municipality of residence. It is important to know that the Municipality of belonging is required, according to article 33 of Law 98/2013, to inform foreign citizens, during the 6 months preceding the age of 18, of the possibility of applying for Italian citizenship by the age of 19. In the absence of such communication, the request can be made even after the age of 19. In the event that, despite having been born in Italy, one has not had continuous residence from birth, but has resided in Italy for at least three years, at the age of 18, the application can be presented at the Prefecture with all the necessary documentation. Furthermore, in application of art. 1 of the same law and which aims to prevent statelessness, in Italy thejus soli is applied in other cases: – by birth in Italy of unknown or stateless parents; – by birth on Italian territory of foreign parents unable to transmit their citizenship to the subject according to the law of the country of origin; – the child of unknown persons found in the territory of the Republic is considered a citizen by birth, if the possession of another citizenship is not proven.
Latvia: A person born since 1 January 2020 in Latvia or to Latvian-resident parents defaults to Latvian citizenship, although the child can instead gain a different citizenship at birth if both parents agree on this; if either parent is a citizen of another country, the parents must submit documentation disclaiming any other birthright citizenship the child would otherwise be entitled to in order for the child to be recognized as a Latvian citizen byjus soli.[115]
Luxembourg: A person born in Luxembourg is automatically aLuxembourg citizen if at least one of their parents was also born in Luxembourg.[116] Additionally, a person born in Luxembourg to foreign, non-Luxembourg-born parents can become a Luxembourg citizen from the age of 12 if they have resided uninterrupted in Luxembourg for at least 5 years immediately prior to submitting the application, and if at least one of their parents lived in Luxembourg uninterrupted for at least 12 months immediately preceding their birth.[117] Furthermore, a person born in Luxembourg to foreign, non-Luxembourg-born parents gains Luxembourg citizenship automatically upon reaching the age of 18, provided that they have lived uninterrupted in Luxembourg for the preceding 5 years and at least one of their parents lived uninterrupted in Luxembourg for at least 12 months immediately preceding their birth.[116]
Malta: A person born in Malta on or after 1 August 1989 is automatically a Maltese citizen if at least one of their parents is Maltese or was born in Malta. Anyone born in Malta before 1 August 1989, regardless of their parents' circumstances, is automatically a Maltese citizen, as the country conferred unconditionaljus soli until this date (seeMaltese nationality law).
Netherlands: After 31 December 1984, the following conditions apply: "The child's mother has Dutch nationality at the time of birth, or the child's parents both have Dutch nationality at the time of birth, or the father of the child has Dutch nationality at the time of birth and is married/registered partner to the non-Dutch mother or acknowledged the child, or the child and the child's mother have their principal residence in the Kingdom of the Netherlands at the time of birth. One of the mother's parents also had her main residence in the Kingdom on the day the mother was born, or the child and the child's father have their principal residence in the Kingdom of the Netherlands at the time of birth. One of the father's parents also had his main residence in The Kingdom on the day the father was born."[118][119]
Portugal: A child born in Portuguese territory to parents who do not possess another nationality is a Portuguese citizen. Also, a person born to foreign parents who were not serving their respective states at the time of birth is a Portuguese citizen if the person declares that they want to be Portuguese and provided that one of the parents has resided in Portugal for at least one year at the time of birth.[120]
Spain: A child born in Spain to foreign parents may acquire Spanish citizenshipjus soli under certain conditions, for example, if either one of the parents was also born in Spain or if neither of the parents can transmit their nationality to the child (such as stateless parents).
Ukraine: A child born on the territory of Ukraine may acquire Ukrainian citizenshipjus soli, if they do not acquire foreign nationality byjus sanguinis from parents, or if their parents have been granted refugee or asylum status in Ukraine, or if the child is stateless or of unknown nationality (seeUkrainian citizenship law, articles 6 and 7).
United Kingdom: Prior to 1 July 2006 unmarried British fathers did not automatically pass on their nationality to children born out of wedlock, even if those children were born in the United Kingdom.Jus soli citizenship was abolished by theBritish Nationality Act of 1981. Since 1 January 1983 until the 2006 changes, children born out of wedlock to foreign (non-British) women were not eligible for citizenship unless the mother was legally "settled" in the country. In 2015 the law was applied retroactively to children born prior to 2006.[121] Under the current law, if neither parent is British or settled, then a child born in the UK can apply for British citizenship if they have spent the first ten years of their life in the UK (seeBritish nationality law).[122]
Australia:[71] Since 20 August 1986, a person born in Australia acquires Australian citizenship by birth only if at least one parent was an Australian citizen or permanent resident; or else after living the first ten years of their life in Australia, regardless of their parents' citizenship status (seeAustralian nationality law).
New Zealand:[71] Since 1 January 2006, a person born in New Zealand acquires New Zealand citizenship by birth only if at least one parent was a New Zealand citizen or permanent resident (includes Australian citizens and Permanent Residents) (seeNew Zealand nationality law), or if to prevent being stateless.[123]
India: A person who was born in India from 26 January 1950 until 1 July 1987 is a citizen by birth, regardless of the parents' nationality. It was restricted in 1987 to people with at least one parent who was a citizen. As of 2008, a person born in India is a citizen only if at least one parent is a citizen, and the other parent is a citizen or a legal migrant. These measures were brought in largely in reaction to illegal migration fromBangladesh.[125]
^Parties to the Convention on the Reduction of Statelessness are also obligated to grant nationality to people who are born aboardships flagged in the country or anaircraft registered in the country who would otherwise become stateless.[18]
^abIsin, Engin F.; Neyers, Peter, eds. (2014).Routledge Handbook of Global Citizenship Studies. Oxford, England:Taylor & Francis. p. 213.ISBN978-0-415-51972-4.
^Shearer, Ivan; Opeskin, Brian (2012). "Nationality and Statelessness". In Opeskin, Brian; Perruchoud, Richard; Redpath-Cross, Jillyanne (eds.).Foundations of International Migration Law. Cambridge, England:Cambridge University Press. p. 99.ISBN978-1139084598.a well-established exception incustomary international law is that a child born to parents who are foreign diplomats does not automatically acquire the nationality of a host State that appliesjus soli.
^Ivan Shearer & Brian Opeskin, "Nationality and Statelessness"Foundations of International Migration Law (eds. Brian Opeskin, Richard Perruchoud & Jillyanne Redpath-Cross: Cambridge University Press, 2012), p. 99.
^Bloom, Tendayi."Problematizing the Conventions on Statelessness"(PDF).The United Nations University Institute on Globalization, Culture and Mobility.Hannah Arendt argued that in Nazi Germany and the territories occupied by the regime, making Jews stateless enabled them to be treated differently from citizens. She writes that 'the Jews had to lose their nationality before they could be exterminated'...Stateless persons are often extremely vulnerable, and may find themselves excluded from the legal labour market, from property ownership and other basic rights, making them easily subject to exploitation.
^"birthright citizenship." In New Oxford American Dictionary, edited by Stevenson, Angus, and Christine A. Lindberg. : Oxford University Press, 2010.
^Comparative Constitutional Law. United Kingdom: Edward Elgar, 2011.
^Understanding Statelessness. United Kingdom: Taylor & Francis, 2017. p. 103
^Jones, Mark P. (2020).Voting and Political Representation in America: Issues and Trends [2 Volumes]. Bloomsbury Publishing.Birthright citizenship goes back to colonial America and is based on the idea of "natural born" subjects of the King of England. After separating from England, the United States continued the idea of a natural-born citizen subject of the nation rather than the king. The right to claim citizenship as a result of being born in the territory of a state is known as the principle ofjus soli, which is Latin for "right to soil." This born-into-nation idea, jus soli, is the basis for the United States conferring birthright citizenship on those born inside its borders".
^Irving, Helen. Allegiance, Citizenship and the Law: The Enigma of Belonging. United Kingdom: Edward Elgar Publishing Limited, 2022.
^CODE DE LA NATIONALITE – ORDONNANCE No. 33/PG.-INT. – DU 14 AOUT 1962 – PORTANT CODE DE LA NATIONALITE TCHADIENNEArchived 13 February 2018 at theWayback Machine "de la nationalité d'origine – CHAPITRE II – Art. 12 – Sont Tchadiens: Les enfants nés au Tchad de parents étrangers; toutefois, ils peuvent, si les deux ascendants ont la même nationalité, opter pour cette nationalité; ce droit d'option ne peut s'exercer que si la législation du pays dont les ascendants sont nationaux le permet." (Translation: "Chadian citizens include: Children born in Chad of foreign parents; however, if both parents have the same nationality, they (the children) can opt for the parents' nationality, if the legislation of their parents' country permits it.")
^CODE DE LA NATIONALITE – ORDONNANCE No. 33/PG.-INT. – DU 14 AOUT 1962 – PORTANT CODE DE LA NATIONALITE TCHADIENNEArchived 13 February 2018 at theWayback Machine "de la nationalité d'origine – CHAPITRE II – Art. 13 – L'option prévue aux articles 11 et 12 s'exerce à l'âge de dix-huit ans révolus. Toutefois, lorsque cette option est motivée par une reconnaissance postérieure à la majorité, l'intéressé doit l'exercer dans le délai d'un an qui suit la reconnaissance." (Translation: "The options presented in articles 11 and 12 deploy themselves at 18 years of age. However, if an individual recognizes their ability to follow these options after majority has been reached, a delay of 1 year must take place from the recognition before the options can be pursued.")
^"The Constitution of Lesotho". 3 November 2025., chap. IV, sec. 38 |CHAPTER IV CITIZENSHIP: 38. Subject to the provisions of subsections (2) and (3), every person born in Lesotho after the coming into operation of this Constitution shall become a citizen of Lesotho. (2) A person shall not become a citizen of Lesotho by virtue of this section if at the time of his birth neither of his parents is a citizen of Lesotho, and-- one or both of his parents possesses such immunity from suit and legal process as is accorded to the envoy of a foreign sovereign power accredited to Lesotho; or one or both of his parents is an enemy alien and the birth occurs in a place then under occupation by the enemy. (3) A person born in Lesotho on or after the coming into operation of this Constitution who is disqualified to become a citizen of Lesotho by virtue of subsection (2) of this section shall become a citizen of Lesotho if he would otherwise become stateless.
^Constitution of Antigua and Barbuda: CHAPTER VIII CITIZENSHIP | PERSONS WHO AUTOMATICALLY BECOME CITIZENS AFTER COMMENCEMENT OF THIS CONSTITUTION | Section 113Archived 17 April 2015 at theWayback Machine "The following persons shall become citizens at the date of their birth on or after 1st November 1981– a. every person born in Antigua and Barbuda: Provided that a person shall not become a citizen by virtue of this paragraph if at the time of his birth- i. neither of his parents is a citizen and either of them possess such immunity from suit and legal process as is accorded to the envoy of a foreign sovereign power accredited to Antigua and Barbuda; or ii. either of his parents is a citizen of a country with which Her Majesty is at war and the birth occurs in a place then under occupation by that country."
^Constitution of Barbados: CHAPTER II CITIZENSHIP Persons born in Barbados after 29 November 1966: Section 4Archived 25 April 2017 at theWayback Machine: "Every person born in Barbados after 29th November 1966 shall become a citizen of Barbados at the date of his birth: Provided that a person shall not become a citizen of Barbados by virtue of this section if at the time of his birth – a. his father possesses such immunity from suit and legal process as is accorded to an envoy of a foreign sovereign state accredited to Her Majesty in right of Her Government in Barbados and neither of his parents is a citizen of Barbados; or b. his father is an enemy alien and the birth occurs in a place then under occupation by the enemy."
^Constitution of Belize: PART III Citizenship, section 24Archived 28 December 2016 at theWayback Machine: "24. Every person born in Belize on or after Independence Day shall become a citizen of Belize at the date of his birth: Provided that a person shall not become a citizen of Belize by virtue of this section if at the time of his birth- his father or mother is a citizen of a country with which Belize is at war and the birth occurs in a place then under occupation by that country"
^The Constitution of Costa Rica: Title II ARTICLE 13:Archived 4 February 2012 at theWayback Machine: "The following are Costa Ricans by birth: ...2. A child born abroad to a born Costa Rican father or mother, who is registered as such in the Civil Register by the will of the Costa Rican parent during its minority, or by his own will up to the age of twenty-five..."
^The Constitution of the Commonwealth of Dominica Chapter VII Citizenship 98Archived 10 January 2017 at theWayback Machine: "Every person born in Dominica after the commencement of this Constitution shall become a citizen of Dominica at the date of his birth: Provided that a person shall not become a citizen of Dominica by virtue of this section if at the time of his birth- a) neither of his parents is a citizen of Dominica and his father possesses such immunity from suit and legal process as is accorded to the enjoyment of a foreign sovereign power accredited to Dominica; or b) his father is a citizen of a country with which Dominica is at war and the birth occurs in a place then under occupation by that country."
^Constitution of Jamaica Chapter II Citizenship 3B.-(1)Archived 13 February 2017 at theWayback Machine: "Every person born in Jamaica shall become a citizen of Jamaica – a. on the sixth day of August 1962, in the case of a person born before that date; b. on the date of his birth, in the case of a person born on or after the sixth day of August 1962."
^Article 12a of the Federal Constitution (translated) says that Brazilians include, "a) those born in the Federative Republic of Brazil, even if of foreign parents, provided they are not in the service of your country"."Neoconstitucionalismo – Análise histórica".JusBrasil.Archived from the original on 5 March 2016. Retrieved5 December 2015.a) os nascidos na República Federativa do Brasil, ainda que de pais estrangeiros, desde que estes não estejam a serviço de seu paí
^Constitution of the Republic of Chile, chap. II, art. 10, par. 1 (Spanish textArchived 6 October 2017 at theWayback Machine;English versionArchived 14 May 2011 at theWayback Machine without recent changes) Article 10.- "Chileans are: 1.- Persons born in the territory of Chile, with the exception of those children of foreigners who are in Chile serving their government, as well as those children of transient foreigners. However, all may opt for the Chilean nationality."
^"Fiji Constitution: chapter 3, Section 10 Citizenship by birth". Archived fromthe original on 29 April 2020.Every child born in Fiji on or after the date of commencement of this Constitution becomes a citizen at the date of birth unless, at the date of birth: (a) a parent of the child has the diplomatic immunity accorded to envoys of foreign sovereign powers accredited to Fiji; and (b) neither parent is a citizen.
^"Constitution of Tuvalu Part III Section 45. Citizenship by birth".Under subsection 1, subject to subsections (3) and (4), a person born in Tuvalu on or after the date on which this Constitution took effect is a citizen of Tuvalu by birth. Note: subsection 3 states that a person does not become a citizen of Tuvalu by virtue of subsection (1) if at the time of his birth neither of his parents was a citizen of Tuvalu; and his father had the privileges and immunities of an envoy to Tuvalu from a country with which Tuvalu had diplomatic relations. And subsection 4 states that a person does not become a citizen of Tuvalu by virtue of subsection (1) if his father was a citizen of a country with which Tuvalu was at war; and the birth occurred in a place in Tuvalu occupied by that country.
^Pakistan Citizenship Act, 1951, II, 1951,[1]Archived 2016-03-04 at theWayback Machine, access date 2 October 2015
^United Nations High Commissioner for Refugees."Tanzania Citizenship Act, 1995". Refworld.Archived from the original on 14 September 2013. Retrieved6 September 2013.
^Kassim, Anis F (2000). "The Palestinians: From Hyphenated to Integrated Citizenship". In Butenschøn, Nils A.; Davis, Uri; Hassassian, Manuel S. (eds.).Citizenship and the state in the Middle East: approaches and applications. Syracuse, N.Y.: Syracuse University Press.ISBN0-8156-2829-3.OCLC43318360.
^"THE NATIONALITY LAW".The Ministry of Justice English Website.Archived from the original on 31 October 2021. Retrieved31 October 2021.
^e.g., child born in Greece to alien parents after coming of age (Nationality law of 1835, Article 2), child born in Greece of unknown father and mother (Greek Civil Law of 1856, Article 14, Paragraph c), child born in Greece and not automatically acquiring another nationality (Greek Nationality Code of 1955, Article 1, Paragraph d)
^"Article 1 A child of foreigner parents born in Greece acquires the right to Greek nationality under the following preconditions: a) He/she has enrolled in the first grade of elementary school and is still attending Greek school at the time the application-declaration of paragraph 2 is being lodged. b) One of their parents has been living legally and continuously for at least five (5) years in the country before the child was born. In case the child was born before this five year period had been completed, then the necessary period of legal and continuous residence of the parents is extended to ten (10) years." See,Law 4332 of 2015Archived 23 September 2016 at theWayback Machine
^Sadiq, Kamal (2008).Paper Citizens: How Illegal Immigrants Acquire Citizenship in Developing Countries. Oxford University Press. p. 10.ISBN978-0-19-537122-2.