A person who is considered a citizen by more than one nation has dual citizenship. It is possible for a United States citizen to have dual citizenship; this can be achieved in various ways, such as by birth in the United States to a parent, or in certain circumstances even grandparent, who is a citizen of a foreign country, by birth in another country to a parent(s) who is/are a United States citizen/s, or by having parents who are citizens of different countries. Anyone who becomes a naturalized U.S. citizen is required to renounce any prior "allegiance" to other countries during the naturalization ceremony; however, this renunciation of allegiance is generally not considered renunciation of citizenship to those countries. http://travel.state.gov/travel/cis_pa_tw/cis/cis_1753.html
United States citizens are required by federal law to identify themselves with a U.S. passport, not with any other foreign passport, when entering and leaving the US. The Supreme Court case of Afroyim v. Rusk declared that a U.S. citizen did not lose his citizenship by voting in an election in a foreign country, or by acquiring foreign citizenship, if such acts did not require him to explicitly renounce his U.S. citizenship. U.S. citizens who have dual citizenship do not lose their United States citizenship unless they renounce it officially.
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Famous quotes containing the words dual and/or citizenship:
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“Our citizenship in the United States is our national character. Our citizenship in any particular state is only our local distinction. By the latter we are known at home, by the former to the world. Our great title is AMERICANS—our inferior one varies with the place.”
—Thomas Paine (1737–1809)