The country where a dual national is located generally has a stronger claim to that person's allegiance. It is important to note that dual nationality may limit U.S. Government efforts to assist citizens abroad. Most U.S. citizens, including dual nationals, must use a U.S. passport to enter and leave the United States. Dual nationals may also be required by the foreign country to use its passport to enter and leave that country. Use of the foreign passport does not endanger U.S. citizenship.
Most countries permit a person to renounce or otherwise lose citizenship.
Information on losing foreign citizenship can be obtained from the foreign country's embassy and consulates in the United States. Americans can renounce U.S. citizenship in the proper form at U.S. embassies and consulates abroad . For more information, see the Citizenship and Nationality area of the State Department s website for American citizens abroad. For assistance outside of the U.S., contact the nearest U.S. Consulate or Embassy . The information provided in this website is not legal advice and should not be interpreted as legal advice.