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Multiple citizenship is a status in which a person is concurrently regarded as a citizen under the laws of more than one state. Multiple citizenships exist because different countries use different, and not necessarily mutually exclusive, citizenship requirements. Colloquial speech refers to people "holding" multiple citizenship but technically each nation makes a claim that this person be considered its national. For this reason, it is possible for a person to be a citizen of one or more countries, or even no country.

Contents 1 Citizenship of multiple countries 1.1 Multiple citizenship prohibited/discouraged 1.1.1 Overseas citizenship of India 1.2 Multiple citizenship encouraged 1.3 Multiple citizenship required 2 Subnational citizenship 2.1 Former 3 Supra-national citizenship 4 Potential issues 4.1 National cohesiveness 4.2 Appearance of foreign allegiance 4.2.1 Multiple citizenship among politicians 4.3 Taxation 4.4 Issues with international travel 5 See also 6 References 7 Further reading 8 External links

  Citizenship of multiple countries

Individual countries follow their own rationales in establishing their criteria for citizenship. Each country has different requirements for citizenship, as well as different policies regarding dual citizenship. These laws sometimes leave gaps where the acquisition of other citizenships does not render the original citizenship invalid, creating a possible situation for an individual to hold two or more nationalities. Here are common reasons to bestow citizenship:

• At least one parent is a citizen (jus sanguinis).
• The person was born on the country's territory (jus soli)
• The person marries a person holding the citizenship (jure matrimonii).^[1]
• The person becomes naturalized.
• The person was adopted from another country as a minor and at least one adoptive parent is a citizen.^[2]
• The person makes a substantial monetary investment: Austria,^[3] Cyprus, Dominica and St. Kitts & Nevis.^[4]

Once citizenship is bestowed, the bestowing country may or may not consider a voluntary renunciation of that citizenship to be valid. In the case of naturalization, some countries require applicants for naturalization to renounce their former citizenship. However, this renunciation may not be recognized by the bestowing country. Technically, the person in question may still possess both citizenships.

For example, United States Chief Justice John Rutledge ruled "a man may, at the same time, enjoy the rights of citizenship under two governments,"^[5] but the US requires applicants for naturalization to renounce all prior allegiance to any other nation or sovereignty as part of the naturalization ceremony.^[6] In the case of a British citizen, however, the UK honors renunciation of citizenship only if done with competent UK authorities.^[7] Consequently, British citizens naturalized in the US remain British citizens in the eyes of the British government even after they renounce British allegiance to the satisfaction of U.S. authorities.

The Republic of Ireland frames its citizenship laws as relating to "the island of Ireland", thereby extending them to Northern Ireland, which is part of the United Kingdom. Therefore, anyone born in Northern Ireland who meets the requirements for being an Irish citizen through birth on the island of Ireland (or a child born outside of Ireland but with a qualifying parent) may exercise an entitlement to Irish citizenship by acting in such a way that only an Irish citizen is entitled to do (such as applying for an Irish passport). Conversely, that such a person has not acted in this way does not necessarily mean that they are not entitled to be an Irish citizen. See Irish nationality law and British nationality law. People born in Northern Ireland are British citizens on the same basis as people born elsewhere in the United Kingdom. People born in Northern Ireland may choose to hold a British passport, an Irish passport, or both.

  Multiple citizenship prohibited/discouraged

Some countries consider multiple citizenship undesirable and take measures to prevent it. This may take the following forms:

1. Automatic loss of citizenship if another citizenship is acquired voluntarily (such as Azerbaijan,^[8] China, Czech Republic, Denmark, India, Indonesia,^{[citation needed]} Japan,^[9] Kazakhstan,^{[citation needed]} Malaysia,^{[citation needed]} Nepal,^{[citation needed]} the Netherlands, Norway). In the case of the Czech Republic, two specific exceptions apply: restoration of Czech citizenship (while keeping the one possessed to date) when the citizenship of former Czechoslovakia was illegally taken away in the years 1948-1990 by the Communist regime and Czechs, as former Czechoslovakians who, as of September 31, 1992, had their Slovak citizenship that caused the automatic loss of their Czech citizenship could apply to regain that Czech citizenship without losing the Slovak one. Saudi Arabian citizenship may be withdrawn if a Saudi citizen obtains a foreign citizenship without the permission of the Prime Minister.^[10]
2. Possible (but not automatic) loss of citizenship if another citizenship is acquired voluntarily (such as Singapore, South Africa^[11]).
3. Possible (but not automatic) loss of citizenship if people with multiple citizenships do not renounce their other citizenships after reaching the age of majority or within a certain period of time after obtaining multiple citizenships (such as Japan^[12] and Montenegro. In Montenegro loss is automatic with some exceptions.)^[13]

In popular discourse, reference to countries that "recognize" multiple citizenship sometimes refer only to the lack of any specific statute forbidding multiple citizenship (leaving aside the difficulties of enforcing such statutes).

Some countries have more complex rules on dual and multiple citizenship. For example, Germany and Austria usually do not allow dual citizenship except for persons who obtain more than one citizenship at the time of birth^[14][15] Germans and Austrians can apply for a permit to keep their citizenship (Beibehaltungsgenehmigung) before taking a second one (for example, both Austria and the U.S. consider Arnold Schwarzenegger a citizen). In general however, any Austrian who takes up a second citizenship will automatically lose their Austrian citizenship. Spain has dual citizenship treaties with Bolivia, Chile, Ecuador, Colombia, Costa Rica, Guatemala, Nicaragua, Paraguay, Peru, the Dominican Republic, Argentina, and Honduras, and Spaniards residing in these countries do not lose their rights as Spaniards if they adopt that nationality. For all other countries, Spanish citizenship is revoked when the person becomes a citizen of that country.^[16]

  Overseas citizenship of India

The Constitution of India does not permit dual citizenship or dual nationality, except for minors where the second nationality was involuntarily acquired. Indian authorities interpreted this to mean a person cannot have another country's passport while simultaneously holding an Indian one, even the for a child claimed by another country as its citizen, who may be required by the laws of this country to use the corresponding passports for foreign travel (such as a child born in the United States to Indian parents). Indian courts have given the executive branch wide discretion over this matter.

In 2005, India amended the 1955 Citizenship Act to introduce a form of overseas citizenship,^[17] which stops just short of full dual citizenship and is in all aspects, like Permanent Residency.^[18] The Overseas Citizenship of India is not a full citizenship of India and so is exempt from the rule forbidding dual citizenship. However, bearers may not vote, run for office, join the army, or take up government posts. Moreover, people who have acquired citizenship in Pakistan or Bangladesh are not eligible for Overseas Citizenship.

  Multiple citizenship encouraged

Some countries consider multiple citizenship desirable^{[citation needed]} as it increases opportunities for their citizens to compete globally, and/or have taken active steps towards permitting multiple citizenship in recent years (such as Switzerland since 1 January 1992 and Australia since 4 April 2002).^[19][20]

  Multiple citizenship required

The Pontifical Swiss Guard are required to be citizens of both Switzerland and the Vatican City. They lose their Vatican citizenship once their service with the Guard is finished. ^[21][22]

  Subnational citizenship

• Under the Fourteenth Amendment to the United States Constitution, 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 are deemed to reside. Certain rights accrue as an incident of state citizenship and access to federal courts can sometimes be determined on State citizenship.
• Switzerland has a three tier system of citizenship - Confederation, canton and commune (municipality).
• Although considered part of the United Kingdom for British nationality purposes, the Crown Dependencies of Jersey, Guernsey and the Isle of Man have local legislation restricting certain employment and housing rights to those with "local status". Although the British citizenship of people from these islands gives them full citizenship rights when in the United Kingdom, it does not give them the rights that British citizenship generally confers when in other parts of the European Union (for example, the right to reside and/or work).
• The Australian territory of Norfolk Island has immigration laws that restrict residence in the territory to those with "local status". Most Norfolk Islanders are Australian citizens.
• The statuses of permanent residency of Hong Kong and Macau, each a Special Administrative Region of the People's Republic of China, are overlaid on Chinese nationality as stipulated in their respective basic laws. Those who concurrently have Chinese nationality and permanent residency in either SAR are entitled a Chinese passport issued by that SAR, which affords them more visa waivers. Laws may confer specific rights to certain persons by virtue of being a Chinese national (such as the right to transmit nationality by birth), a resident (permanent or all) of the region (e.g. right to vote in local elections), or a combination of both (such as the right to hold public office above a certain level). It is now possible to be a permanent resident of both Special Administrative Regions.
• People from Åland have joint regional (Åland) and national (Finnish) citizenship. People with Ålandic citizenship (hembygdsrätt) have the right to buy property and set up a business on Åland, but Finns without regional citizenship cannot. Finns can get Ålandic citizenship after living on the islands for five years, and Ålanders lose their regional citizenship after living on the Finnish mainland for five years.^[23][24]
• The government of Puerto Rico began issuing Puerto Rican citizenship certificates in September 2007 after Juan Mari Brás, a lifelong supporter of independence, won a successful court victory that validated his claim that Puerto Rican citizenship was valid and can be claimed by anyone born on the island or with at least one parent who was born there.^[25]
• In Bosnia and Herzegovina, citizens hold also citizenship of their respective entity which is generally the Entity of their residence. It can be either citizenship of Republika Srpska or of the Federation of Bosnia and Herzegovina. One cannot hold both entity citizenships simultaneously.

  Former

• Following the federalization of Czechoslovakia in 1968, Czechoslovak citizens also possessed an internal citizenship of either the Czech or Slovak Republic. Upon the nation's peaceful dissolution in 1993, this was used to determine whether they ought to receive Czech or Slovak citizenship.
• Before the break-up of Yugoslavia in 1991, Yugoslav citizens possessed an internal citizenship of their own republic (Serbia, Croatia, Slovenia etc.) as well as Yugoslav citizenship. In Serbia and Montenegro, this system was in effect until 2006.^[26]

  Supra-national citizenship

• In European Union law there is the concept of EU citizenship which flows from citizenship of a member state. A citizen of an EU country is free to live and to work in another EU country for an unlimited period of time, but member states may reserve the right to vote in national elections, stand for national election, become a public servant in highly sensitive ministries (Defence for example), etc. only for their citizens. An EU state may place restrictions on the free movement rights of citizens of newly admitted states for several years, such provisions remain in force mostly for nationals of Bulgaria and Romania (no later than 2014 but 2016 for Switzerland); in the past, and to a lesser extent, such provisions also affected Estonia, Latvia, Lithuania, Poland, the Czech Republic, Slovakia, Hungary and Slovenia.
• The Commonwealth of Nations has a Commonwealth citizenship for the citizens of its members. Some member states (such as the United Kingdom) allow non-nationals who are Commonwealth citizens to vote and stand for election while resident there. Others make little or no distinction between citizens of other Commonwealth nations and citizens of non-Commonwealth nations.
• Commonwealth of Independent States nations (the republics of the former Soviet Union) are often eligible for fast track processing to citizenships of other CIS countries, with varying degrees of recognition/tolerance of dual citizenship among the states.

  Potential issues

  National cohesiveness

Some have questioned whether allowing dual citizenship impedes cultural assimilation, increases disconnection from the political process, and degrades national identity/cohesiveness.^[27]

The rise in tension between mainstream and migrant communities is cited as evidence of the need to maintain a strong national identity and culture. They assert that the fact that a second citizenship can be obtained without giving anything up (such as the loss of public benefits, welfare, healthcare, retirement funds, and job opportunities in the country of origin in exchange for citizenship in a new country) both trivializes what it means to be a citizen^[28] and nullifies the consequential, transformational, and psychological change that occurs in an individual when they go through the naturalization process.^[29]

In effect, this approach argues, the self-centered taking of an additional citizenship contradicts what it means to be a citizen in that it becomes a convenient and painless means of attaining improved economic opportunity without any real consequences and can just as easily be discarded when it is no longer beneficial.^[30] Proponents argue that dual citizenship can actually encourage political activity providing an avenue for immigrants who are unwilling to forsake their country of origin either out of loyalty or due to a feeling of separation from the mainstream society because of language, culture, religion, or ethnicity.^[31]

A 2007 academic study concluded that dual citizens had a negative effect on the assimilation and political connectedness of first generation Latino immigrants to the United States:

• 32% less likely to be fluent in English
• 18% less likely to identify as "American"
• 19% less likely to consider the US as their homeland
• 18% less likely to express high levels of civic duty
• 9% less likely to register to vote
• 15% less likely to have ever voted in a national election

The study also noted that although dual nationality is likely to disconnect immigrants from the American political system and impede assimilation, the initial signs suggest that these effects seem to be limited almost exclusively to the first generation (although it is mentioned that a full assessment of dual nationality beyond the first generation is not possible with present data).^[32]

Concern over the effect of multiple citizenship on national cohesiveness is generally more acute in the United States. The reason for this is twofold:

• The United States is a "civic" nation and not an "ethnic" nation. American citizenship is not based on belonging to a particular ethnicity, but on political loyalty to American democracy and values. Regimes based on ethnicity, which support the doctrine of perpetual allegiance as one is always a member of the ethnic nation, are not concerned with assimilating non-ethnics since they can never become true citizens. In contrast, the essence of a civic nation makes it imperative that immigrants assimilate into the greater whole as there is not an "ethnic" cohesiveness uniting the populace.^[33]
• The United States is an immigrant nation. It has prospered due to its generous immigration policy of taking in and absorbing a very diverse stock of immigrants. As immigration is primarily directed at family reunification and/or refugee status rather than education and job skills, the pool of candidates tends to be poorer, less educated,^[34] and consistently from less stable countries (either non-democracies or fragile ones) with less familiarity or understanding of American values, making their assimilation more difficult and important.^[33]

The degree of angst over the effects of dual citizenship seemingly corresponds to a country's model for managing immigration and ethnic diversity:

• The differential exclusionary model, which accepts immigrants as temporary "guestworkers" but is highly restrictive with regard to other forms of immigration and to naturalisation of immigrants. Japan, China, Taiwan, and the countries of the Middle East tend to follow this approach.
• The assimilationist model, which accepts that immigrants obtain citizenship, but on the condition that they give up any cultural, linguistic, or social characteristics that differ from those of the majority population. The United States is the primary example of this model and given its massive immigration tradition and increasingly diverse population, is very sensitive to matters regarding integration (see Immigration to the United States).
• The multicultural model, which grants immigrants access to citizenship and to equal rights without demanding that they give up cultural, linguistic, and/or intermarriage restrictions or otherwise pressure them to integrate or inter-mix with the mainstream population. Europe, Canada, and Australia have historically taken this approach, but there is some evidence that they are moving gradually toward the assimilationist model (especially in Europe as the number of non-European immigrants to the continent continues to increase) (see Immigration to Europe).^[35]

  Appearance of foreign allegiance

The examples and perspective in this section deal primarily with the United States and do not represent a worldwide view of the subject. Please improve this article and discuss the issue on the talk page. (June 2009)

People with multiple citizenship may be viewed as having dual loyalty, having the potential to act contrary to a government's interests, and this may lead to difficulties in acquiring government employment where security clearance may be required.

In the United States, dual citizenship is associated with two categories of security concerns: foreign influence and foreign preference. Contrary to common misconceptions, dual citizenship in itself is not the major problem in obtaining or retaining security clearance in the United States. As a matter of fact, if a security clearance applicant's dual citizenship is "based solely on parents' citizenship or birth in a foreign country", that can be a mitigating condition.^[36] However, taking advantage of the entitlements of a non-US citizenship can cause problems. For example, possession and/or use of a foreign passport is a condition disqualifying one from security clearance and "is not mitigated by reasons of personal convenience, safety, requirements of foreign law, or the identity of the foreign country" as is explicitly clarified in a Department of Defense policy memorandum which defines a guideline requiring that "any clearance be denied or revoked unless the applicant surrenders the foreign passport or obtains official permission for its use from the appropriate agency of the United States Government".^[37]

This guideline has been followed in administrative rulings by the United States Department of Defense (DoD) Defense Office of Hearings and Appeals (DOHA) office of Industrial Security Clearance Review (ISCR), which decides cases involving security clearances for Contractor personnel doing classified work for all DoD components. In one such case, an administrative judge ruled that it is not clearly consistent with US national interest to grant a request for a security clearance to an applicant who was a dual national of the US and Ireland, despite the fact that it has with good relations with the US.^[38]

In Israel, certain military units, including most recently the Israeli Navy's submarine fleet, as well as posts requiring high security clearances, require candidates to renounce any other citizenship before joining, though number of units making such demands has declined. In many combat units, candidates are required to declare but not renounce any foreign citizenship.^[39]

  Multiple citizenship among politicians

This perception of dual loyalty can apply even when the job in question does not require security clearance. In the United States, dual citizenship is not very common among politicians or government employees; however, it does occur. For example, Arnold Schwarzenegger retained his Austrian citizenship during his service as a Governor of California.^[40] In 1999, the U.S. Attorney General's office issued an official opinion that a statutory provision that required the Justice Department not to employ a non-"citizen of the United States"^[41] did not bar it from employing dual citizens.^[42]

In 2006, Boris Johnson (at the time a Member of the British Parliament and afterward Mayor of London) renounced the US citizenship he had acquired by being born in New York.^[43] He declared: "After 42 happy years I am getting a divorce from America. It is not just that I no longer want an American passport. In fact, what I want is the right not to have an American passport." His renunciation was prompted by US laws that require a US citizen entering the United States to use a US passport, rather than any other passport.^[44]

A small controversy arose in 2005 when Michaëlle Jean was appointed the Governor General of Canada (official representative of the Queen). Although Jean no longer holds citizenship in her native Haiti, her marriage to French-born filmmaker Jean-Daniel Lafond allowed her to obtain French citizenship several years before her appointment. Article 23-8^[45] of the French civil code allows the French government to withdraw the French nationality from French citizens holding government or military positions in other countries and Jean's appointment made her both de facto head of state and commander-in-chief of the Canadian forces. The French embassy released a statement that this law would not be enforced because the Governor General is essentially a ceremonial figurehead. Nevertheless, Jean renounced her French citizenship two days before taking up office to end the controversy about it.^[46]

However, former Canadian Prime Minister John Turner was born in the United Kingdom and still retains his dual citizenship. Stéphane Dion, former head of the Liberal Party of Canada and the previous leader of the official opposition, holds dual citizenship with France as a result of his mother's nationality; Dion nonetheless indicated a willingness to renounce French citizenship if a significant number of Canadians viewed it negatively.^[47]

The Constitution of Australia, in Section 44(i), explicitly forbids people who hold foreign citizenship from sitting in the parliament of Australia.^[48] A court case (see Sue v Hill) determined that the UK is a foreign power for purposes of this section of the constitution, despite Australia holding a common nationality with it at the time that the Constitution was written, and that Senator-elect Heather Hill had not been duly elected to the national parliament because at the time of her election she was a subject or citizen of a foreign power.^[49] (This restriction does not apply to members of the state parliaments, where regulations vary by state.)

In New Zealand, controversy arose in 2003 when Labour MP Harry Duynhoven applied to renew his citizenship of the Netherlands. Duynhoven, the New Zealand-born son of a Dutch-born father, had possessed dual citizenship from birth but had temporarily lost his Dutch citizenship due to a 1995 change in Dutch law regarding non-residents.^[50] While New Zealand's Electoral Act allowed candidates with dual citizenship to be elected as MPs, Section 55^[51] of the Act stated that an MP who applied for citizenship of a foreign power after taking office would forfeit his/her seat. This was regarded by many as a technicality, however; and Duynhoven, with his large electoral majority, was almost certain to re-enter Parliament in the event of a by-election. As such, the Labour Government retrospectively amended the Act, thus enabling Duynhoven to retain his seat. The amendment, nicknamed "Harry's Law",^[52] was passed by a majority of 61 votes to 56.^[53] The revised Act allows exceptions to Section 55 on the grounds of an MP's country/place of birth, descent, or renewing a foreign passport issued before the MP took office.^[54]

Both the current^[update] Estonian president Toomas Hendrik Ilves and the former Lithuanian president Valdas Adamkus had been naturalized US citizens prior to assuming their offices. Both have renounced their U.S. citizenships: Ilves in 1993 and Adamkus in 1998. This was necessary because neither individual's new country permits retention of a former citizenship. Adamkus was a high-ranking official in the Environmental Protection Agency, a federal government department, during his time in the United States.

  Taxation

In some cases, multiple citizenship can create additional tax liability. Most countries that impose tax normally base tax liability on source and/or residency.^{[citation needed]} Very few countries base tax liability on citizenship, the major exception being the United States which uses citizenship as well as residency and source as a basis for determining tax liability.^{[citation needed]}

• Residency: a country may tax the income of anyone who lives there, regardless of citizenship or whether the income was earned in that country or abroad;
• Source: a country may tax any income generated there, regardless of whether the earner is a citizen, resident, or non-resident; or
• Citizenship: a country may tax the worldwide income of their citizens, regardless of whether they reside in that country or whether the income was sourced there.

Only two countries base taxation on citizenship: the United States and Eritrea.^[55]A few countries, such as the Philippines considers citizenship to a limited extent.^[56] Only U.S. expatriates are subject to tax on all of their worldwide income, although U.S. law provides measures to reduce or eliminate double taxation issues for some expatriates. It has been reported that some U.S. expatriates have renounced U.S. citizenship in order to avoid this tax burden.^[57][58]

A person with multiple citizenship may have a tax liability to his country of residence and also to one or more of his countries of citizenship; or worse, if unaware that one of his citizenships created a tax liability, that country may consider the person to be a tax evader. Many countries and territories have contracted tax treaties or agreements for avoiding double taxation. Still, there are cases in which a person with multiple citizenship will owe tax solely on the basis of holding one of those citizenships.

For example, consider a person who holds both Australian and United States citizenship, lives and works in Australia. He would be subject to Australian taxation, because Australia taxes its residents, and he would be subject to US taxation because he holds US citizenship. In general, he would be allowed to subtract the Australian income tax he paid from the US tax that would be due. Plus, the US will allow some parts of foreign income to be exempt from taxation; for instance, in 2006 the foreign earned income exclusion allowed up to US$82,400 of foreign salaried income to be exempt from income tax.^[59] This exemption, plus the credit for foreign taxes paid mentioned above, often results in no US taxes being owed, although a US tax return would still have to be filed. In instances where the Australian tax was less than the US tax, and if there was income that could not be exempted from US tax, the US would expect any tax due to be paid.

The United States Internal Revenue Service has excluded some regulations such as Alternative Minimum Tax (AMT) from tax treaties that protect double taxation.^{[citation needed]} In its current format even if US citizens are paying income taxes at a rate of 56%, far above the maximum US marginal tax rate, the citizen can be subject to US taxes because the calculation of the Alternative Minimum Tax does not allow full deduction for taxes paid to a foreign country. Other regulations such as the post date of foreign mailed tax returns are not recognized and can result in penalties for late filing if they arrive at the IRS later than the filing date.

However, the filing date for overseas citizens has a two month automatic extension to 15th of June^[60].

"If you are a U.S. citizen or resident alien residing overseas, or are in the military on duty outside the U.S., on the regular due date of your return, you are allowed an automatic 2-month extension to file your return and pay any amount due without requesting an extension. For a calendar year return, the automatic 2-month extension is to June 15.

If you are unable to file your return by the automatic 2-month extension date, you can request an additional extension to October 15 by filing Form 4868 before the automatic 2-month extension date. However, any tax due payments made after June 15 will be subject to both interest charges and failure to pay penalties." (IRS, 2012)

  Issues with international travel

Many countries, even those that permit multiple citizenship, do not explicitly recognise multiple citizenship under their laws: individuals are treated either as citizens of that country or not, and their citizenship with respect to other countries is considered to have no bearing. This can mean (in Iran,^[61] Mexico,^[62] many Arab countries, and former Soviet republics) that consular officials abroad may not have access to their citizens if they also hold local citizenship. Some countries provide access for consular officials as a matter of courtesy, but do not accept any obligation to do so under international consular agreements. The right of countries to act in this fashion is protected via the Master Nationality Rule.

Multiple citizens who travel to a country that claims them as a citizen may be required to enter or leave the country on that country's passport. For example, a United States Department of State web page on dual nationality contains the information that most U.S. citizens, including dual nationals, must use a U.S. passport to enter and leave the United States.^[63] Also, terms of the South African Citizenship Act, it is an offence for someone aged at least 18 with South African citizenship and another citizenship to enter or depart the Republic of South Africa by using of the passport of another country. They may also be required to fulfill requirements ordinarily required of its resident citizens, including compulsory military service or exit permits.

  See also

• Canadians of convenience
• History of citizenship
• Immigration
• Nationality
• Nationality law
• Naturalization
• Talbot v. Janson

  References

  Further reading

• Randall Hansen, Patrick Weil, ed. (January 2002). Dual Nationality, Social Rights and Federal Citizenship in the U. S. and Europe: The Reinvention of Citizenship. Berghahn Books. ISBN 1-57181-804-9. 
• Thomas Faist, ed. (August 2007). Dual Citizenship in Europe: From Nationhood to Societal Integration. Aldershot, UK: Ashgate. ISBN 978-0-7546-4914-4. 
• Thomas Faist, Peter Kivisto, ed. (November 2007). Dual Citizenship in Global Perspective: From Unitary to Multiple Citizenship. Houndmills, UK: Palgrave Macmillan. ISBN 978-0-230-00654-6. 
• Thomas Faist and Jürgen Gerdes (2008). "Dual Citizenship in an Age of Mobility" (PDF). Transatlantic Council on Migration (MPI). http://www.migrationpolicy.org/transatlantic/docs/Faist-FINAL.pdf. Retrieved 2012-04-26. 
• Federal Investigative Services Division of the U.S. Office of Personnel Management (2001). "Citizenship Laws of the World: A Directory" (PDF). http://www.opm.gov/extra/investigate/IS-01.pdf. Retrieved 2008-01-28. 

  External links

International

• The Hague 1930 Convention
• Convention n°8 on the exchange of information concerning acquisition of nationality, 1964

Council of Europe

• Convention on the Reduction of Cases of Multiple Nationality and on Military Obligations in Cases of Multiple Nationality, 1963
• European Convention on Nationality, 1997

Nationality laws By continent Africa Algeria Egypt Ghana Liberia Morocco Namibia Nigeria South Africa Asia Armenia Azerbaijan Bangladesh Bhutan Burma (Myanmar) China Cyprus (Northern Cyprus1) India Indonesia Iran Iraq Israel Japan Kazakhstan South Korea Lebanon Malaysia Mongolia Nepal Pakistan Philippines Russia Singapore Taiwan Turkey Europe Andorra Austria Belarus Belgium Bulgaria Croatia Czech Republic Denmark Estonia Finland France Germany Greece Hungary Iceland Ireland Italy Latvia Lithuania Luxembourg Macedonia Malta Moldova Monaco Montenegro Netherlands Norway Poland Portugal Romania Russia Serbia Slovakia Slovenia Spain Sweden Switzerland Ukraine United Kingdom North America Barbados Canada Mexico United States Oceania Australia Nauru New Zealand Samoa Tonga South America Argentina Brazil Chile Colombia Paraguay Peru Uruguay International organizations Commonwealth of Nations European Union By type Jus matrimonii Jus sanguinis Jus soli Naturalization Other Citizenship Act Birth aboard aircraft and ships Multiple citizenship Passport Right of return Second-class citizen Statelessness Defunct Nazi Germany Notes 1 Partially unrecognised and thus unclassified by the United Nations geoscheme. It is listed following the member state that the UN categorises it under. Category