INA 321: Derivative Citizenship Rules for Children

Former section 321 of the Immigration and Nationality Act governs derivative citizenship claims for children who turned 18 before February 27, 2001. If that describes you, your claim is analyzed under INA 321 as it existed at the time, not under the more lenient Child Citizenship Act rules that replaced it. The statute was in force from December 24, 1952 through February 26, 2001, and its default rule required both parents to naturalize as U.S. citizens while the child held lawful permanent resident status and was still under 18.¹

Who Is Still Covered by Former INA 321

The cutoff is your 18th birthday, not your birth date. If you were already 18 on February 27, 2001, the Child Citizenship Act cannot help you, because Congress did not make it retroactive. Your citizenship must be established under the older statute, using the conditions that existed at the moment they had to be met.²

If you were still under 18 on February 27, 2001, the current INA 320 applies to you instead. Practically, anyone born on or after February 28, 1983 who met INA 320’s conditions before turning 18 is covered by the newer law.¹

What INA 321 Required

Every condition had to be satisfied before the child’s 18th birthday. Missing even one, or meeting the last piece one day late, defeated the claim.

The default was that both parents had to naturalize as U.S. citizens. The statute allowed the naturalization of only one parent to transmit citizenship in three specific situations:¹

One parent was deceased, and the surviving parent naturalized.
The parents were legally separated, and the parent who naturalized had legal custody of the child. Joint custody counted.
The child was born out of wedlock and paternity had not been established through legitimation, in which case only the mother’s naturalization could transmit citizenship.

Beyond having the right parent (or parents) naturalize in time, the child had to hold lawful permanent resident status. Either the child was already a lawful permanent resident residing in the United States when the qualifying parent naturalized, or the child began permanent residence in the United States afterward but still before turning 18.³

Adopted Children Under INA 321

The rules were stricter for adopted children. The child had to be residing in the United States in the custody of the adoptive parent or parents at the time of that parent’s naturalization, pursuant to a lawful admission for permanent residence. Unlike biological children, an adopted child could not qualify by beginning permanent residence after the parent’s naturalization.¹

How Custody Is Evaluated

INA 321 required the child to be in the legal and physical custody of the qualifying parent. The federal regulation at 8 CFR 320 defines legal custody as “the responsibility for and authority over a child,” and USCIS applies the same custody presumptions when it reviews older claims.⁴

Legal custody is presumed when both parents were married, living together, and not separated, and the child lived with them. The same presumption applies when the child lived with a surviving parent after the other parent’s death, or when a child born out of wedlock had been legitimated and lived with the natural parent. For divorced or legally separated parents, USCIS looks for a court order awarding primary care, control, and maintenance of the child to the citizen parent. Joint custody satisfies the requirement.⁴

Physical custody means the child actually lived with the qualifying parent. Claims can fall apart here. A child who held a green card and had a naturalized parent, but who was living with a different relative, may not satisfy this element even when the parent had legal authority on paper. Both pieces had to be true at the same time.

If You Turned 18 on or After February 27, 2001

INA 321 does not apply to you. The current INA 320 replaced it and asks only that, before the child turns 18, at least one parent is a U.S. citizen (by birth or naturalization), the child is a lawful permanent resident, and the child is residing in the United States in the legal and physical custody of that citizen parent. The conditions can be met in any order, as long as they overlap before the 18th birthday.⁵

Proving an INA 321 Claim With Form N-600

Derivative citizenship happens by operation of law the moment the statutory conditions are satisfied. There is nothing to file to become a citizen. You do need documentation to prove it, and the standard vehicle is Form N-600, Application for Certificate of Citizenship, filed with USCIS.⁶

The application can be submitted online or by mail. Adults who believe they derived citizenship as children can file for themselves. The filing fee is $1,385, and applicants facing financial hardship may request a fee waiver using Form I-912. USCIS updates its fees periodically, so verify the current amount before filing.⁶

For an INA 321 claim, expect to gather evidence in these categories:

Your birth certificate and proof you held lawful permanent resident status before turning 18, such as an old Permanent Resident Card or A-file records.
Proof of the qualifying parent’s naturalization, typically the Certificate of Naturalization, with dates that fall before your 18th birthday. If both parents were required to naturalize, you need both.
Documents establishing the parent-child relationship, such as a marriage certificate, adoption decree, or legitimation records.
If you are relying on a single-parent exception, the underlying proof: a death certificate for the deceased parent, a legal separation order plus custody documentation, or records showing the child was born out of wedlock and never legitimated.

After filing, USCIS issues a receipt notice and schedules a biometrics appointment. An interview may follow if the evidence needs clarification. Applicants age 14 and older take an Oath of Allegiance before the Certificate of Citizenship is issued; children under 14 are generally excused.⁷

If Your N-600 Is Denied

A denial does not mean you are not a citizen. It means USCIS concluded that the evidence presented did not establish the claim. You can challenge the decision by filing Form I-290B, Notice of Appeal or Motion, within 30 calendar days of the decision date. If USCIS mailed the denial, you get 33 calendar days from the mailing date. The filing fee is $800.⁸

A late appeal will be rejected unless the office that issued the denial treats the filing as a motion to reopen or reconsider. Missing the window can force you to start over with a new N-600 and another filing fee, so treat the 30-day deadline seriously.⁸

Where the legal question is complex or the evidence is strong but USCIS disagrees with the analysis, a declaratory judgment action in federal district court under 8 U.S.C. § 1503 is another route. It is more expensive and slower, but it puts the citizenship question before a federal judge rather than an administrative reviewer.

1
U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 12 Part H Chapter 7 – Deriving Citizenship Before the Child Citizenship Act of 2000
2
U.S. Department of State Foreign Affairs Manual. 8 FAM 301.10 Acquisition of U.S. Citizenship Under the Child Citizenship Act
3
U.S. Department of State Foreign Affairs Manual. 8 FAM 301.9 Acquisition of U.S. Citizenship by Parents
4
eCFR. 8 CFR Part 320 – Child Born Outside the United States and Residing in the United States
5
U.S. Citizenship and Immigration Services. USCIS Policy Manual – Automatic Acquisition of Citizenship After Birth
6
U.S. Citizenship and Immigration Services. Application for Certificate of Citizenship
7
U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 12 Part J Chapter 3 – Oath of Allegiance Modifications and Waivers
8
U.S. Citizenship and Immigration Services. Notice of Appeal or Motion