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dual nationality


The Supreme Court of the United States has stated that dual nationality is "a status long recognized in the law" and that "a person may have and exercise rights of nationality in two countries and be subject to the responsibilities of both. The mere fact that he [sic] asserts the rights of one citizenship does not without more mean that he renounces the other" (see Kawakita v. U.S., 343 U.S. 717 [1952] ).



Current Law

United States law does not contain any provisions requiring U.S. Citizens who are born with dual nationality or who acquire a second nationality at an early age to choose one nationality or the other when they become adults (see Mandoli v. Acheson, 344 U.S. 133 [1952] ).  The current nationality laws of the United States do not specifically refer to dual nationality.


While recognizing the existence of dual nationality and permitting Americans to have other nationalities, the U.S. Government does not endorse dual nationality as a matter of policy because of the problems which it may cause. Claims of other countries upon dual-national U.S. Citizens often place them in situations where their obligations to one country are in conflict with the laws of the other.


In addition, their dual nationality may hamper efforts to provide diplomatic and consular protection to them while they are abroad.  It generally is considered that while a dual national is in the other country of which the person is a citizen, that country has a predominant claim on the person.  In cases where a dual national encounters difficulty in a foreign country of which the person is a citizen, the ability of the U.S. Government to provide assistance may be quite limited since many foreign countries may not recognize the dual national's claim to U.S. Citizenship.



Loss of U.S. Citizenship

The automatic acquisition or retention of a foreign nationality does not affect U.S. citizenship; however, the acquisition of a foreign nationality upon one's own application may cause loss of U.S. citizenship under Section 349(a)(1) of the Immigration and Naturalization Act (8 U.S.C. 1481).  In order for loss of nationality to occur under Section 349(a)(1), it must be established that the naturalization was obtained with the intention of relinquishing U.S. citizenship.  Such an intention may be shown by a person's statements or conduct.  If the U.S. Government is unable to prove that the person had such an intention when applying for and obtaining the foreign citizenship, the person will have both nationalities.



Which Passport to Use

Section 215 of the Immigration and Naturalization Act ( 8 U.S.C. 1185) requires U.S. Citizens to use U.S. passports when entering or leaving the United States unless one of the exceptions listed in Section 53.2 of Title 22 of the Code of Federal Regulations applies.  Dual nationals may be required by the other country of which they are citizens to enter and leave that country using its passport, but do not endanger their U.S. citizenship by complying with such a requirement.



Korean Nationality

Laws establishing one's claim to citizenship can be complex, and differ significantly from country to country. For information on other possible claims of nationality you should direct your queries to the appropriate country's embassy or representatives. This includes instances where your American Citizen child has a Korean parent. The child may have acquired Korean nationality at birth, though the final determination would rest with the Korean authorities. Begin by contacting the Korean government's Department of Nationality of the Immigration Bureau at 02-653-0462 (Korean language only).


The Government of the Republic of Korea does not permit dual citizenship after the age of 21. American citizens of Korean descent who hold dual citizenship under South Korean law and work or study in South Korea are usually compelled by the Republic of Korea to choose one or the other nationality soon after reaching that age.


In addition, South Korean men over the age of 18, including American citizens of Korean descent, are subject to compulsory military service. A dual national may not be allowed to abandon his ROK nationality until he finishes his military service, or has received a special exemption from military service. There have been several instances in which young American men of Korean descent, who were born and lived all of their lives in the United States, arrived in the ROK for a tourist visit only to find themselves drafted into the South Korean army.


Americans of Korean descent may request further information from the nearest South Korean Embassy or Consulate before visiting Korea.


In the U.S., contact the Embassy of the Republic of Korea at 2320 Massachusetts Avenue N.W., Washington, D.C. 20008, telephone (202) 939-5660/63 or online. There are South Korean consulates in Atlanta, Boston, Chicago, Guam, Honolulu, Houston, Miami, New York City, Los Angeles, San Francisco and Seattle.




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For Americn Citizen Services (ACS) inquiries, please e-mail us at : seoul_acs@state.gov.

The basic information on American Citizen Services may also be obtained by calling 02-397-4114. Our FAX number is 02-397-4101.

This is an official U.S. Government source for information on the WWW. Inclusion of non-U.S. Government links or information does not imply endorsement of contents.

The U.S. Embassy is closed on both U.S. and Korean holidays.


Updated October 1, 2002

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