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Claiming U.S. Citizenship

Do You Have A Claim To U.S. Citizenship ?

You may have a claim to citizenship if:

  • You were born in the United States; or


  • You were born outside the United States or one of its outlying possessions to U.S. citizen parent(s) and your U.S. citizen parent(s) meets the physical presence requirement.

Individuals who have previously been documented as U.S. citizens

If you have previously been issued any of the following documents, you may immediately begin your application for your first U.S. passport. If you are no longer in possession of any of these documents, you must obtain a certified copy from the issuing authority.

Once you are in possession of one of the listed documents, please see our instructions for first time passport applicants.


Individuals who have never been documented as U.S. citizens

If you were born outside the United States, have not been previously documented as a U.S. citizen, and are:

  • under the age of 18: please see our instructions for obtaining a Consular Report of Birth Abroad.


  • over the age of 18: you should review the information concerning transmission requirements to see if your parent(s) had the prerequisite physical presence in the United States required by U.S. citizenship law in effect at that time. If, based on this information, you believe you have a claim to U.S. citizenship, you should write to us at the following address, giving as many details of your situation as possible:

Passport & Citizenship Unit
U.S. Embassy
5 Upper Grosvenor Street
London, W1A 2LQ

We will then let you know if there are any grounds for you to pursue your citizenship claim further.

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— Adoption —


Derivative claim to U.S. citizenship depends on the existence of a legal blood relationship between the applicant and the U.S. citizen parent. Therefore, adopted children do not acquire citizenship automatically upon adoption. However, they may be eligible for citizenship through naturalization if they have been processed for an immigrant visa. Read more….

 
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