U.S. Citizenship (N-400 Naturalization and N-600 Certificate of Citizenship)

+1 305-515-0613

390 N Orange Ave, Suite 2300, Orlando, FL 32801

U.S. Citizenship (N-400 Naturalization and N-600 Certificate of Citizenship)

People often search for “U.S. citizenship” when they want to (1) apply for naturalization with Form N-400, or (2) get proof they are already a U.S. citizen through a parent by filing Form N-600 for a Certificate of Citizenship. This page links to both so you can quickly choose the right path.

If you are a green card holder applying to become a U.S. citizen, start with our Naturalization (N-400) page. If you believe you are already a U.S. citizen through a parent (citizenship at birth or derivative citizenship), start with our Certificate of Citizenship (N-600) page. Each section explains eligibility, common problems that cause delays, and how we can help.

Which citizenship process do I need (N-400 vs N-600)?

Use N-400 (Naturalization) if you are a green card holder applying to become a U.S. citizen.
Use N-600 (Certificate of Citizenship) if you are already a U.S. citizen through a parent and need USCIS proof of citizenship.

Naturalization

Certificate of Citizenship

Thousands of Approved Cases

Scroll through fifty recent approval notices below or click here to view thousands.

Frequently asked questions about U.S. citizenship

What is the difference between N-400 and N-600?

N-400 (naturalization) is for green card holders applying to become U.S. citizens. N-600 is for people who are already U.S. citizens through a parent and want USCIS proof with a Certificate of Citizenship.

Do I need N-600 if I already have a U.S. passport?

Not always. A U.S. passport is widely accepted as proof of citizenship, but some people still choose N-600 to obtain a USCIS Certificate of Citizenship for record clarity and certain USCIS-related situations.

What is citizenship through parents?

Citizenship through parents generally refers to citizenship at birth through a U.S. citizen parent or automatic citizenship after a parent naturalizes when the child meets the legal requirements.

What are the biggest reasons citizenship cases get delayed?

Common reasons include missing documents, unclear timelines (residence/travel), problems proving parent citizenship or custody/residence facts for N-600, and “good moral character” or documentation issues for N-400.

Can you help if I have a complex history (arrests, long travel, taxes, or prior immigration problems)?

Yes. Complex histories often require careful timeline work and complete documentation to reduce the risk of delays, RFEs, or denials.

Customer Testimonials

Real Testimonials from Past Clients

Impressed beyond infinity

I liked Peter's calm, honest, and balanced approach to our very difficult immigration problem. He is very organized and responsive. He filed both of our cases with the DOS and USCIS promptly and the process went without a hitch. He is very intelligent and knowledgeable, but your success will also depend on your willingness to provide as much information and detail as possible. Peter will be able to organize it in the most effective way. We've just learned that our case was approved. Hoorah!

ALEX

Green Card through NIW

Went very smoothly. Very fast responses to my inquiries. Always sent me an email when a status would change. Peter sent me a list of items that I needed to submit to him, and after that he took over and managed everything in a timely manner. I never needed a lawyer before, and this was a very easy first experience.

LUKAS

A patient and professional attorney!

Peter is great. I found him online and scheduled an interview with him, letting him review my CV. He gave me very honest suggestions and we decided to work on my extraordinary ability alien worker permanent residence petition, the EB1A. It took me a long time to gather information: recommendation letter, publication, etc. etc. During this time, Peter is very responsive and guided my questions timely. He also finally decided that I had enough evidence and should submit the petition. When I was waiting for the approval, he is still available to answer my questions. My case was submitted in June 2011 and I received my permanent resident card at the end of 2011, which is, according to many of my friends, super fast and smooth. I highly recommend Peter as your immigration lawyer.

Linlin

Excellent legal service

The office of Mr. Peter did a great job preparing and submitting my application for a green card. During my interview, the immigration officer said "your lawyer submitted a well prepared application". The interview could not have been more comfortable. And my application could not have been better prepared. Thanks to Mr. Peter and his assistant Jen's professional work. I definitely recommend this office for all your immigration services and needs.

GEORGE

The Best Lawyer Ever!

Peter is very professional and honest lawyer. Believe me, I have done an extensive research and his name was always coming up. I hired him last year to help me to obtain a green card. He was very quick to response and he explains everything clearly. He even checked my recommendation letters! When I moved, the green card of my wife was sent twice and it was returned. He and Jen handled this issue for no additional fee. Thanks to him and Jen I got my green card in less than 4 moths. He is really good. Trust me. I highly recommend him! I’d give him 10 starts if I could.

Mikhail F

Committed, Insightful, Efficient

This is the best law firm I have had the pleasure of doing business with. They came highly recommended by close friends. I was easily able to convine my company to hire them. While I had very high expectations at the start, I was pleasantly surprised to see Peter and his team surpass all my expectations. Extremely intelligent and committed team, highly effective, efficient and there to stand by you when you need them most. I highly recommend this firm with no reservations.

Samvith