The EB-5 path to US citizenship: 5 years of residence and the N-400 process

The EB-5 pathway to US citizenship is a long but clearly structured journey, applied uniformly to all investors who meet the requirements for residence, physical presence, good moral character and the civics test. For most Visa EB-5 Vietnamese investors, the ultimate goal does not stop at the United States permanent resident card but extends to US citizenship — for the whole family.

The naturalisation process is carried out via Form N-400, administered by United States Citizenship and Immigration Services (USCIS) . Counting from the date the first EB-5 conditional green card is issued, an investor needs about five years to become eligible to file the N-400, plus a further 5-12 months for processing and the oath ceremony. The total time from the conditional green card to citizenship typically falls between 5.5 and 6.5 years.

This article analyses the EB-5 pathway to US citizenship in detail — from the naturalisation requirements and the 90-day early-filing window, to the eight-step process, the civics test, and the specific considerations for Vietnamese EB-5 investors who often maintain cross-border activities.

The EB-5 Pathway to US Citizenship — Naturalisation Requirements

According to USCIS, permanent residents naturalising under the 5-Year Rule must meet nine key requirements at the same time:

• Be at least 18 years old at the time of filing Form N-400
• Have been a lawful permanent resident (LPR) for at least five continuous years
• Maintain five years of Continuous Residence in the United States
• Meet a minimum Physical Presence of 30 months within the last five years
• Have resided for at least three months in the current state or USCIS district before filing
• Maintain Good Moral Character throughout the statutory period
• Have a basic ability to read, write and speak English
• Pass the civics test on US history and government
• Attend the Oath of Allegiance ceremony

For permanent residents married to a US citizen, the 3-Year Rule applies instead of the 5-Year Rule (three years as an LPR, 18 months of physical presence, three years of GMC). This route is not commonly applicable to EB-5 investors, so this article will focus on the 5-Year Rule.

One important benefit: an investor can file Form N-400 up to 90 days before reaching the five-year permanent residence mark (that is, after four years and nine months of holding the green card). This shortens the overall waiting time without violating the five-year residence requirement.

How the Five-Year Residence Period Is Calculated for EB-5 Investors

For EB-5 investors, one important point needs clarifying: the two years on a conditional green card DO count towards the five-year permanent residence requirement for naturalisation. This is good news, as it significantly shortens the overall timeline.

Specifically, the five-year clock starts on the date the first conditional green card is issued (after I-526E approval and visa issuance). Investors go through the following stages:

• Years 1-2: two-year conditional green card
• Year 2: file Form I-829 within the 90-day window before the conditional green card expires
• Year 2 — once I-829 is approved: the conditional green card is automatically extended while I-829 is pending
• After I-829 is approved: ten-year permanent green card
• Year 4, month 9: eligible to file Form N-400 (90 days before the five-year mark)
• Year 5 onwards: undergo the interview, civics test and oath ceremony

Note: I-829 does NOT need to be approved before filing Form N-400. An investor can file N-400 while I-829 is still pending. However, USCIS will adjudicate I-829 first, then N-400. In practice, the two applications are often processed almost in parallel in the final stage.

Continuous Residence — the continuous residence requirement

Continuous Residence is a legal concept specific to US immigration law. According to USCIS guidance on Continuous Residence, a permanent resident must maintain the United States as their principal place of residence throughout the five years before filing N-400.

Continuous Residence does not mean an investor cannot leave the United States — it means the United States must remain their principal residence, and trips abroad must be temporary in nature.

Two important thresholds:

A trip of six months to one year: creates a rebuttable presumption of broken continuous residence. The investor must prove they maintained ties with the United States during the absence: tax filings, lease agreements, bank accounts, family and employment.

A trip over one year: automatically breaks continuous residence. The five-year clock resets automatically. The investor must then wait a further four years and one day after returning to the United States before filing N-400.

Note: a Re-entry Permit (Form I-131) protects the green card against the risk of abandonment but does NOT protect continuous residence for N-400 purposes. A permanent resident with a valid Re-entry Permit who is absent for 18 months will still have their N-400 clock reset.

For EB-5 investors aiming to naturalise on the standard five-year schedule, the optimal strategy is to avoid altogether any single trip over six months during the period spent building continuous residence.

Physical Presence — the physical presence requirement

Physical Presence is a day count — the actual number of days present in the United States during the five years before filing N-400.

The requirement under the 5-Year Rule: a minimum of 30 months (913 days) of physical presence within the last five years, counting both the departure day and the return day.

Detailed calculation:
– Total days in five years: 1,825 days
– Minimum time required in the United States: 913 days (50%)
– Maximum permitted absence: 912 days (912/1,825 = 49.9%)

In practice, many EB-5 investors are surprised when they recalculate physical presence: two business trips to Vietnam a year of 3-4 weeks each, plus one long family holiday, can easily exceed 50 days/year × 5 years = 250+ days. Add unplanned trips, and total absence over five years can approach the limit.

Recommendation: keep a detailed travel log from the first year after receiving the green card, recording the departure and return dates of every trip. Keep passport stamps, boarding passes and hotel invoices for reconciliation when filing N-400. USCIS requires a detailed declaration of every trip abroad over the five years on Form N-400 Part 8.

Good Moral Character — overall assessment

Good Moral Character (GMC) is a hard-to-quantify but core requirement of N-400. USCIS assesses GMC throughout the entire statutory period — the five years before filing plus the time the application is pending.

Factors affecting GMC:

Permanent bars (permanent bar to naturalisation):
– Conviction for an aggravated felony in the United States after 29 November 1990
– Genocide, torture, persecution
– Trafficking in slaves

Conditional bars (bar during the statutory period):
– Conviction for a Crime Involving Moral Turpitude (CIMT)
– Conviction for an offence carrying a sentence of one year or more
– Polygamy
– Illegal gambling
– Habitual drunkard
– Illegal drug use or trafficking
– Prostitution
– Human trafficking

Tax and financial factors:
– Failing to file or misfiling taxes during the last five years
– Failing to pay court-ordered child support or spousal support
– Failing to register for Selective Service (men aged 18-26)

Misrepresentation factors:
– Giving false information on previous immigration applications
– Providing false information to USCIS or other US government agencies

For Vietnamese EB-5 investors, the two most common issues are tax compliance and keeping declared information consistent with the I-526E/I-829 record. Filing Form 1040 in full as a resident, together with the required FBAR and FATCA forms, is a necessary condition for maintaining GMC.

One important note: having outstanding unpaid tax debt does not automatically result in a naturalisation denial. USCIS will accept GMC if the investor has an IRS payment plan and is making regular payments. However, entirely missing tax returns (never filed) is a more serious problem — all required returns must have been filed before applying for N-400.

The English and Civics Test

The naturalisation test consists of two parts, assessed by the USCIS officer during the interview:

Part 1 — English Test

Three basic skills:

Reading: read aloud one of three sentences provided by the officer. The candidate must read it correctly and convey the sentence’s main meaning clearly.

Writing: write down one of three sentences read aloud by the officer. It must be grammatically correct and convey the correct meaning.

Speaking: assessed through the candidate’s ability to answer the officer’s questions about the information on Form N-400 throughout the interview.

Part 2 — Civics Test

The test consists of 10 questions selected at random from the published pool of 100 USCIS civics questions. The investor must answer at least 6 out of 10 correctly.

The pool of 100 civics questions covers the following topics:
– Principles of American democracy
– The federal system of government (the three branches, the system of checks and balances)
– State government systems
– Rights and responsibilities of citizens
– American history (the colonial period, independence, the Civil War, the 20th century)
– American geography
– National symbols (the flag, the national anthem, holidays)

Official study materials are published free of charge by USCIS, including the list of 100 questions with answers, reading and writing practice videos, and flash cards.

Exemptions

USCIS has rules exempting older applicants from the English and civics requirements:

The 50/20 rule: a permanent resident aged 50 or over AND who has held a green card for 20 years is exempt from the English test and may take the civics test in their native language.

The 55/15 rule: a permanent resident aged 55 or over AND who has held a green card for 15 years is exempt from the English test and may take the civics test in their native language.

The 65/20 rule: a permanent resident aged 65 or over AND who has held a green card for 20 years is exempt from English and may take a simplified civics test (a pool of 20 questions, 6 out of 10 correct).

Form N-648 — Medical Disability Exception: an investor with a physical or mental disability that prevents them from learning English or civics may file Form N-648, signed by a US doctor, to request an exemption from both parts of the test. This filing requires rigorous medical documentation.

For a principal EB-5 investor aged 50-60, it is worth considering the timing of the N-400 filing to make use of the 55/15 rule where applicable. However, most will file at the standard four-years-and-nine-months mark to shorten the timeline.

The Eight-Step N-400 Filing Process

The standard process, from preparing the application to the oath ceremony:

Step 1 — Check eligibility: the investor self-assesses or consults an immigration lawyer to confirm all nine requirements are met.

Step 2 — Prepare documents: green card, passport, five years of tax transcripts, travel log, marriage certificate (if applicable), child support records (if applicable).

Step 3 — File Form N-400: online via a USCIS account (US$710 in 2026) or on paper by mail (US$760). Filing is permitted 90 days before completing five years on the green card.

Step 4 — Biometrics appointment: USCIS sends a notice of a biometrics appointment at an Application Support Center, usually 2-6 weeks after filing. Fingerprints, photo and signature are taken for the background check.

Step 5 — Interview: A USCIS officer conducts the interview at a field office, reviewing the information on Form N-400 and asking about travel history, employment, family and tax compliance. The English and civics tests are conducted in the same session.

Step 6 — Decision: a decision is usually received at the interview itself. Three outcomes are possible:
– Approved
– Continued (deferred pending additional documents or a retest)
– Denied

Step 7 — Oath Ceremony: the applicant receives Form N-445 notifying them of the oath ceremony date, usually 2-6 weeks after approval. The ceremony is held at a courthouse, a USCIS field office or a large community venue. The green card is surrendered, the Oath of Allegiance is recited, and the Certificate of Naturalization is issued — officially becoming a US citizen, the final step of the process US naturalisation.

Step 8 — After naturalisation: apply for a US passport, register to vote, update Social Security with citizenship status, and sponsor relatives (if desired).

The total time from filing N-400 to the oath ceremony in the 2026 period is typically 5-12 months. Based on updates from late 2024 and early 2026, USCIS has significantly improved its processing speed — the average processing time now stands at 5-6 months, much faster than the 12-18 months seen in previous years.

Benefits After Naturalisation

US citizenship brings a range of permanent benefits not available with a green card:

Political rights:
– The right to vote and to run for federal, state and local office
– The right to serve on a jury
– The right to hold certain government positions that require citizenship

Legal benefits:
– A US passport — visa-free or visa-on-arrival access to 184 countries (far more than a Vietnamese passport)
– Consular protection while abroad
– Never subject to deportation (except in cases of naturalisation fraud)
– No need to apply for a Re-entry Permit for long-term absences
– No loss of status due to continuous residence rules

Family benefits:
– Faster sponsorship of a spouse (Immediate Relative, with no quota)
– Sponsorship of parents under Immediate Relative status
– Sponsorship of adult children and siblings (subject to quota, but still faster than LPR sponsorship)
– Children born in future are automatically US citizens

Financial and welfare benefits:
– Eligibility for all types of scholarships, financial aid and government grants
– Full entitlement to Social Security and Medicare benefits
– Eligibility to work at federal agencies requiring citizenship clearance

The right to hold dual citizenship: The United States does not require citizens to renounce another nationality. Vietnam also permits dual citizenship in certain cases. An investor can hold both US and Vietnamese citizenship — however, specific legal advice should be sought, as Vietnam’s rules on dual citizenship are fairly restrictive.

Specific Considerations for Vietnamese EB-5 Investors

Vietnamese EB-5 investors typically face a number of specific considerations on the EB-5 pathway to US citizenship:

Cross-border business activity: many investors continue to run a business in Vietnam after receiving their green card. This creates pressure on physical presence and continuous residence — specific planning is needed for the total time spent in each country.

Assets in Vietnam: full annual disclosure via Form 8938 (FATCA) and FBAR is a necessary condition for maintaining GMC. Breaching the reporting requirements can directly affect the N-400 application.

Family ties: many investors have parents and relatives in Vietnam. USCIS does not consider frequent family visits a problem, provided each trip does not exceed six months and total physical presence still meets the requirement.

Children studying abroad: children who accompany the EB-5 application typically study in the United States. Once they turn 18 and have five years of permanent residence, they can file their own N-400 independently. This is a common strategy to ensure the whole family naturalises within the same timeframe.

Physical presence through the conditional green card period: the two years on a conditional green card still count towards both continuous residence and physical presence for N-400. Recommendation: spend most of this two-year period in the United States to build a solid foundation for both I-829 and N-400.

Summary

The EB-5 pathway to US citizenship is a clearly structured journey lasting approximately 5.5 to 6.5 years from the date the conditional green card is issued. The benefit of filing N-400 90 days early, the 30-month physical presence formula within the last five years, and the 50/20 and 55/15 age exemption rules are the key legal points to grasp when planning.

For Vietnamese EB-5 investors, the three key factors for successfully completing the pathway are: avoiding any single trip over six months, maintaining full tax compliance on worldwide income, and building genuine ties in the United States throughout the five years.

PLI’s immigration specialists recommend that investors plan their pathway from the pre-approval stage of I-526E, rather than waiting until receiving the green card to start considering naturalisation. Regularly consulting a US-licensed immigration lawyer about one’s personal situation at each stage — particularly the final stage of the conditional green card and the six months before filing N-400 — is the most effective way to avoid emerging risks and reach the citizenship goal on schedule.