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The N-600 form is the application for Certificate of Citizenship it is filed by an individual to claim U.S. citizenship either by action of law while in the U.S. or born outside of the United States to U.S. citizen parent(s) who would like to document their U.S. citizenship status based on U.S. citizen parentage.
Biological or adopted child of a U.S. citizen born outside the United States can claim U.S. citizenship by action of law if the following applies:
Note: If the applicant is now 18 years of age, and all the above criteria applied to you before you reached the age of 18, and you were under the age of 18 on February 27, 2001 (date law took effect), you may file form N-600 to obtain Certificate of Citizenship.
If the applicant was under the age of 18 on February 27, 2001, but not all the criteria conditions mentioned above were met prior to your 18th birthday, you will need to establish U.S. citizenship in your own right.
It is also possible to file for a Certificate of Citizenship if all the following applied before your 18th birthday and prior to the law taking effect on February 27, 2001:
If the applicant is the biological child of a U.S. citizen, born outside the U.S., and you would like to claim U.S. citizenship by having been born to a U.S. citizen parent(s) you automatically became a U.S. citizen at birth if the following applies:
Our Application Package includes all the forms you need to send to the USCIS for processing. It also includes personalized filing instructions that tell you exactly how to properly file your application with the USCIS. Application Package Fee: $199. USCIS Filing Fee: $1170.