N-400 Naturalization

★ 100+ 5 Star Reviews
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You’ve Earned It. Become a U.S. Citizen.

Personalized N-400 naturalization representation — from eligibility review through the oath ceremony. Start with a free consultation in English or Spanish.

★★★★★
Trusted by future U.S. citizens nationwide


A newly naturalized U.S. citizen holding their certificate of naturalization

The N-400 Looks Simple. It Isn’t.

On paper, the N-400 is one form. In practice, it’s a close examination of your last five years — your travel history, your taxes, your arrests (even minor ones), your selective service registration, and sometimes the details of how you got your green card in the first place.

  • You’re not sure whether you qualify yet — the 5-year vs. 3-year rules are confusing
  • You have an arrest or a traffic ticket in your past and don’t know if it matters
  • You owe back taxes or had a gap in filing
  • You’ve spent time outside the U.S. and are worried about continuous residence
  • Your English isn’t perfect and you’re nervous about the interview
  • You’re worried an N-400 mistake could trigger removal instead of citizenship

Every one of those issues can be addressed — but it needs to be addressed before you file, not after.

How We Take You From Green Card to Citizen

A clear, four-step process — so you always know where you are and what’s coming next.

1

Eligibility & Risk Review

On your free consultation, we confirm you qualify and flag anything that needs to be addressed before filing — an old arrest, a tax gap, a long trip abroad. Some issues need to be resolved first. Filing on top of them is how people get into trouble.

2

Application Preparation

Every question on the N-400 matters. We prepare your application so nothing gets flagged — including the parts most applicants overlook (selective service, organizational memberships, the tax and travel sections).

3

Test Preparation Resources

We equip you with everything you need for the civics and English tests. If you’re nervous about the English portion, we’ll tell you honestly where you stand and what to practice.

4

Interview Representation

We attend your naturalization interview with you. You won’t face the officer alone. Afterwards, we see you through to the oath ceremony — the moment you officially become a U.S. citizen.

Why Work With Leiva Law on Your Citizenship Case

The N-400 is your last immigration application. Make it the one you get right.

We Spot Issues Before USCIS Does

An arrest from 2012. A trip longer than 180 days. A missed tax year. These are the things that derail citizenship applications — and the things we catch in our free consultation.

Bilingual Through the Oath

Every step in English or Spanish — including prepping you or a family member for what the officer will ask in the interview.

Boutique, Not Factory

N-400 mills push cases through without really looking at them. We don’t. Your attorney knows your file personally and will remember you by name on the call.

Scarlett Leiva, immigration attorney and founder of Leiva Law Firm

Meet Your Attorney

Scarlett Leiva, Immigration Attorney

Scarlett is a second-generation daughter of immigrants who founded Leiva Law Firm to walk clients through every stage of the family-based immigration journey — including the finish line. A Cum Laude graduate of John Marshall Law School, she represented clients before the Immigration Courts through the Catholic Charities Immigration Clinic. She handles naturalization for straightforward applicants and for those with criminal records, long absences abroad, or other complications. Bilingual, personally involved, and as invested in your oath ceremony as you are.

  • J.D., John Marshall Law School (Cum Laude)
  • Catholic Charities Immigration Clinic alum
  • Second-generation daughter of immigrants
  • Bilingual: English & Spanish

What N-400 Clients Say About Leiva Law

Real reviews from new U.S. citizens. Pulled from our 100+ five-star Google reviews — see the full set on our testimonials page.

★★★★★

“Scarlett and Leiva Law Firm are a great team to have on your side when you and your family are dealing with immigration matters. They responded promptly to our emails and gave us helpful advice that guided us through the process. It was incredibly reassuring to have Scarlett accompany us to the green card interview, and we plan to retain Leiva Law Firm’s services again in the future.”

— Bettina King-Smith

★★★★★

“Scarlett and the Leiva Law Firm team were exceptional in assisting me throughout the entire process. After consulting with multiple attorneys in San Francisco, Scarlett stood out right away. Her expertise, professionalism and clarity immediately inspired confidence and conviction which made it a very easy decision to move forward with Leiva Law Firm. The entire process was explained clearly upfront, everything was transparent, and the process was handled efficiently and smoothly by the team. They were extremely professional, responsive, and detail-oriented, which made the case feel entirely stress-free. I highly recommend them to anyone needing any kind of immigration support!”

— Eric

★★★★★

“Highly recommend — Scarlett and her team are knowledgeable, reliable and a pleasure to work with. I felt in safe hands throughout and was very happy with the outcome.”

— Adam Beach

N-400 Naturalization — Frequently Asked Questions

Answers to the questions N-400 applicants ask us most often. If yours isn’t here, bring it to your free consultation.

When can I apply for U.S. citizenship?
Most green card holders can apply after 5 years of continuous residence. If you got your green card through marriage to a U.S. citizen and are still married, you can usually apply after 3 years. There are narrower exceptions for military service. We’ll confirm your exact eligibility date on the free consultation.
What if I have an arrest on my record?
It depends on what the arrest was for and when it happened. Some arrests are non-issues. Others require careful disclosure. A few make you inadmissible or can even trigger removal if you apply. That’s exactly why we review your history before you file — not after.
Can I naturalize if I owe taxes?
Yes, in most cases, as long as you’re on a documented payment plan with the IRS. Unpaid taxes can affect the “good moral character” requirement, but an active, compliant payment plan is usually sufficient. We’ll help you document it properly.
What if I’ve spent a lot of time outside the U.S.?
The continuous residence and physical presence rules are some of the most technical parts of the N-400. A single trip longer than 180 days can create a presumption that you broke continuous residence. We look at your travel history in detail and flag any gaps before you file.
Is my English good enough to pass the interview?
You need to read, write, and speak basic English. You don’t need to be fluent. On the free consultation, we’ll give you an honest read on where you are and what to practice. If you qualify for an age-and-time exemption, you may be able to take the test in Spanish — we’ll confirm that too.
How long does the naturalization process take?
Processing times vary by field office, but most N-400s take 8 to 14 months from filing to oath ceremony. We’ll give you an office-specific estimate based on where your case will be adjudicated.
What happens at the oath ceremony?
You take the Oath of Allegiance, receive your Certificate of Naturalization, and walk out a U.S. citizen. Immediately after, you can apply for a U.S. passport and register to vote. For many of our clients, it’s the most meaningful day of their immigration journey — and we’re honored to be part of it.

You’ve Done the Hard Work. Let’s Make You a Citizen.

Schedule a free consultation with a Leiva Law attorney. We’ll review your eligibility, flag anything that needs attention, and build your path to citizenship. In English or Spanish.

Or request a callback — we respond within one business day

All consultations are confidential. Available in English or Spanish.

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