U.S. Citizenship through Naturalization

Becoming a citizen through naturalization is a process in which a non-U.S. citizen voluntarily becomes an American citizen. U.S. citizens:

Have had a Permanent Resident (Green) Card for at least five years, or for at least three years if you’re filing as the spouse of a U.S. citizen

Have had a Permanent Resident (Green) Card for at least five years, or for at least three years if you’re filing as the spouse of a U.S. citizen
You must renew your Permanent Resident Card before applying for citizenship if:
Your card will expire within six months of applying, or
Your card has already expired
You can apply for naturalization before you receive your new Green Card. But, you’ll need to submit a photocopy of the receipt for your Form I-90, Application to Replace Permanent Resident Card, when you receive it.
Meet certain eligibility requirements. To see if you’re eligible, click on the link that is most similar to your situation. Some requirements may include being:
At least 18 years old when you apply
Able to read, write, and speak basic English
A person of good moral character
Go through the 10-step naturalization process which includes:
Determining your eligibility to become an American citizen
Preparing and submitting form N-400, the application for naturalization
Taking the U.S. Naturalization Test and having a personal interview.

Certificates of Citizenship and Naturalization are proof of your U.S. citizenship.

Get a Certificate of Citizenship or Certificate of Naturalization

Apply for a Certificate of Citizenship if:

You were born abroad to U.S. citizen parents, and
Your parents did not get a Consular Report of Birth Abroad for you before you turned 18.