If you don’t have a copy of your child’s permanent resident card, check with any agency that might have made a copy, like a school, the welfare office, a lawyer, or an employer.
If you still can’t get a copy, your child can ask for a copy of their immigration file. Do this by filling out a free FOIA request, Form G-639. You can find a FOIA request application online at www.uscis.gov/g-639. It may take several weeks to get a response if you file online. It could take several months if you file by sending in a paper form.
You could also get a replacement card. You do this by filing Form I-90 Application to Replace Permanent Resident card. You need to pay $540, or apply for a fee waiver. See our fact sheets Replacing Your Permanent Resident Card and Immigration Fee Waivers.
If you can’t get a copy of your child’s birth certificate, you may ask 2 people who were present at the time of the child’s birth to each write an Affidavit of Birth. This is a sworn statement that they were there.
The Affidavit of Birth should give detailed information about the person writing it like name, address, immigration status etc. They should also write the names of the child and the parents, the child’s birth date and how they know your child and about the birth. If you don’t have a marriage certificate, the affidavits should also mention if the parents were married.
The affidavits need to be signed in front of a notary.
If you can't find your copy of your certificate of naturalization, you might be able to get proof with a FOIA request for your immigration file (see above).
Or you can file Form N-565, Application for Replacement Naturalization/Citizenship Document. Find it at www.uscis.gov/n-565. You need to pay $555, or apply for a fee waiver, to ask for a new copy of your certificate of naturalization.
Note: If you are over 18 and applying for yourself and your naturalized citizen parent is refusing to provide a copy of their certificate, call a lawyer. A lawyer can help you get a copy from court.
You might be able to file Form N-600 even if you can’t get the permanent resident card of the child or your naturalization certificate. The Department of Homeland Security should have this information in their file. BUT, they can deny your application if you do not include these documents, so make sure you send them if you can.