EB-5 Residence and Travel: The 6-Month/Year Rule and the Re-entry Permit

The rules on EB-5 residency and travel are among the most commonly misunderstood issues for Vietnamese investors. Many people believe that the United States permanent resident card is a free pass to enter and leave the United States at any time — the reality is completely different. Maintaining the green card requires investors to demonstrate a genuine intent to treat the United States as their permanent home.

For Visa EB-5 For Vietnamese investors — who often have significant business, family, and assets in Vietnam — the question of how much time they may spend absent from the United States becomes a core issue in maintaining green card status while managing a life split between two countries.

This article analyses the key timeframes (6 months, 1 year, 2 years), the Re-entry Permit (Form I-131), the risk of abandonment of residence, and the specific considerations for EB-5 investors seeking to maintain a lawful cross-border life between Vietnam and the United States.

Core principles of EB-5 residence and travel

According to United States Citizenship and Immigration Services (USCIS), permanent residents are free to travel abroad and short trips generally do not affect their status. However, USCIS has no fixed rule on the number of days a person may spend outside the United States. Instead, the agency applies the “intent” principle — the permanent resident’s genuine intention to treat the United States as a long-term home.

When a permanent resident returns to the United States after a trip abroad, a U.S. Customs and Border Protection (CBP) officer assesses a number of factors to determine whether there is an intent to abandon residence:

• Length of absence
• Purpose of the trip (a short-term visit, or actual settlement in another country)
• Family ties in the United States
• Employment and income in the United States
• Property and bank accounts in the United States
• Filing US taxes as a resident (Form 1040)
• Driving licence and voter registration in a US state
• US health insurance and credit cards

This composite principle is known as the “totality of circumstances” — CBP and USCIS do not look at a single factor but assess the investor’s overall life. As a result, even a trip of under 6 months may be scrutinised if the investor has no concrete ties to the United States.

Key timeframes

USCIS and CBP apply three key timeframes to assess the risk of abandonment:

Threshold 1 — Under 6 months’ absence

A trip of under 180 days is considered low risk. CBP does not usually ask detailed questions when an investor returns from a short trip. However, even at this threshold, the investor still needs documents proving the purpose of the trip (tourism, business, visiting family) and should maintain basic ties with the United States.

For EB-5 investors who regularly return to Vietnam for business or family reasons, the 6-month threshold is a key boundary to keep in mind at all times. Several consecutive trips of under 6 months can still accumulate into a risk if CBP finds that the investor spends most of their time outside the United States.

Threshold 2 — 6 months to 1 year

A trip of 180 to 365 days creates a rebuttable presumption of abandonment — a rebuttable assumption that the investor has given up permanent residence. On returning to the United States, the investor may be referred by CBP to secondary inspection — an in-depth interview with detailed document review.

To overcome this presumption, the investor must demonstrate:
– The specific reason for the long trip
– A consistent intention to return to the United States
– Continued maintenance of ties in the United States throughout the absence
– Full tax filing as a resident for the year of absence

During 2024-2026, CBP has tightened its questioning of permanent residents absent for 6 months or more, particularly cases with weak ties in the United States.

Threshold 3 — Over 1 year’s absence

This is the most serious boundary. According to USCIS, a continuous absence of over 1 year WITHOUT a Re-entry Permit automatically renders the green card invalid for returning to the United States. Airlines may refuse boarding; CBP may deny entry and place the person into removal proceedings.

In this situation, the investor has two options:

Option 1 — SB-1 Returning Resident Visa: filed at the US embassy or consulate general in the country of residence. According to United States Department of State, the SB-1 is for permanent residents absent due to circumstances beyond their control (serious illness, being stranded by a natural disaster or war) who always intended to return. The SB-1 approval rate is low — it requires rigorous supporting documentation.

Option 2 — Form I-193 Waiver: filed at the port of entry on return, requesting a waiver of the valid green card requirement. This is a discretionary option with no automatic right, and depends on the CBP officer.

For absences of over 2 years — even with a Re-entry Permit — the permit will have expired and the investor must apply for an SB-1.

Re-entry Permit — a tool for protecting the green card

The Re-entry Permit is a travel document issued by USCIS through Form I-131, allowing a permanent resident to be absent from the United States for up to 2 years without being presumed to have abandoned residence based on duration.

The main role of the Re-entry Permit:
– Demonstrating an intention to maintain permanent residence throughout the absence
– Allowing return without needing to apply for an SB-1 Returning Resident Visa
– Reducing scrutiny from CBP on return
– Some countries may accept the Re-entry Permit as a substitute travel document for a passport

However, there are two important limitations to keep in mind:

Limitation 1 — It does not protect continuous residence for naturalisation: this is a point many investors misunderstand. The Re-entry Permit only protects the green card from the risk of abandonment; it does NOT protect the 5-year continuous residence requirement for applying for US naturalisation. A trip of over 6 months still creates a presumption of broken continuous residence for N-400 purposes, even if the investor holds a valid Re-entry Permit.

Limitation 2 — It does not guarantee entry: The Re-entry Permit only prevents CBP from automatically concluding abandonment based on the length of absence. CBP still has the discretion to consider other factors (the totality of circumstances) and question the intention to maintain permanent residence.

Conditions for applying for a Re-entry Permit

To apply for a Re-entry Permit via Form I-131, an EB-5 investor needs to meet the following:

• Holding a permanent green card or a conditional green card (EB-5 investors hold a 2-year conditional green card before I-829)
• Being physically present in the United States when filing Form I-131
• Being able to attend a biometrics appointment at a USCIS Application Support Center in the United States
• Not having been absent for so long that the green card has already become invalid

Filing fee for Form I-131 (2026): US$630. It can be filed online through myUSCIS or by mail.

The Re-entry Permit filing process

The standard process comprises the following steps:

Step 1: preparing Form I-131 and supporting documents for the green card, passport, and the reason for and expected length of the absence.

Step 2: filing Form I-131 and the US$630 fee while in the United States. The investor can file online through a myUSCIS account or by mail.

Step 3: waiting for the biometrics appointment notice. Attending the biometrics appointment at a USCIS Application Support Center. This step must be completed in the United States before the investor leaves — if the investor leaves the United States before biometrics, the I-131 application will be denied.

Step 4: once biometrics have been completed, the investor may leave the United States. USCIS will continue processing the application while the investor is abroad.

Step 5: once the Re-entry Permit is approved, USCIS sends the permit to the designated address (which may be a US address or a US embassy/consulate in the country of residence).

2026 processing time

This is important information to keep up to date: in 2026, Re-entry Permit processing typically takes 14 to 17 months. This is markedly different from the 3-6 month processing time of previous years. Investors need to plan well ahead and can no longer rely on the shorter timelines seen before.

The practical implication: an EB-5 investor planning a long absence needs to file Form I-131 at least 3-4 months before leaving the United States to allow time to complete biometrics. The permit may be received while the investor is abroad — USCIS can send it to an address in Vietnam, or to the US Embassy in Hanoi or the Consulate General in Ho Chi Minh City.

Re-entry Permit validity

• Default validity: 2 years from the date of approval
• Shortened 1-year validity: if the investor has spent more than 4 of the last 5 years outside the United States

A Re-entry Permit CANNOT be renewed from abroad. If more time is needed, the investor must return to the United States before the permit expires, file a new Form I-131 and repeat biometrics. A new Form I-131 can be filed within the last 6 months of the current permit to maintain continuous coverage — however, the new permit’s validity will run from the new approval date, not from the expiry date of the old permit.

Specific considerations for the EB-5 conditional green card

EB-5 investors receive a 2-year conditional green card before filing I-829 to convert to a permanent green card. For the conditional green card, there are two specific considerations:

Consideration 1 — Re-entry Permit validity: for a conditional permanent resident, the Re-entry Permit is valid for either 2 years or until the I-829 filing deadline, whichever comes first. This means an EB-5 investor in the conditional green card period may receive a permit valid for less than 2 years.

Consideration 2 — Filing I-829 from abroad: I-829 must be filed within the United States, and the investor needs to be physically present in the United States at a specific point within the 90-day window before the 2-year anniversary of the conditional green card. Maintaining appropriate EB-5 residence and travel during this 2-year period is essential, not only to protect the green card but also to complete the I-829 process.

Many EB-5 investors choose to spend most of the 2-year conditional green card period actually living in the United States — both to build ties in preparation for I-829 and to accumulate physical presence time for later naturalisation purposes.

Continuous residence for naturalisation — a separate issue

This is the part most often confused among the legal rules relating to EB-5 residence and travel.

For naturalisation purposes under Form N-400, USCIS requires two residence criteria:

Continuous Residence: the investor must maintain continuous residence in the United States for the most recent 5 years (or 3 years if married to a US citizen) before the N-400 filing date.

Physical Presence: the investor must be physically present in the United States for at least 30 months of the last 5 years (or 18 months of the last 3 years for those married to a US citizen).

The “6-month rule”:
– A continuous absence of 180 days or more: creates a (rebuttable) presumption of broken continuous residence
– A continuous absence of 365 days or more: an automatic break, resetting the continuous residence clock

The Re-entry Permit does NOT protect continuous residence. A permanent resident with a valid Re-entry Permit who spends 18 months outside the United States may still keep the green card but will have their N-400 clock reset, and must then wait a further 4 years and 1 day before filing N-400.

For EB-5 investors seeking US naturalisation, the optimal strategy is to avoid entirely any trip of over 180 days during the period of building continuous residence for N-400.

Form N-470 — Application to Preserve Residence for Naturalization

Form N-470 is a tool for protecting continuous residence for naturalisation purposes, but its scope of application is very limited. N-470 is only for:

• Those working for the US government abroad
• Those working for a US research institution
• Foreign employees of a US corporation engaged in promoting US trade
• Those working for a public international organisation of which the United States is a member
• Missionaries abroad

Most EB-5 investors do not fall into these groups and so cannot take advantage of N-470. The most practical way to protect the N-400 timeline remains avoiding trips of over 6 months.

Recommendations for Vietnamese EB-5 investors

For Vietnamese EB-5 investors needing to balance business in Vietnam with maintaining a green card in the United States, some practical recommendations:

During the 2-year conditional green card period:
– Try to spend most of the time in the United States to build solid ties
– Avoid any single trip of over 6 months
– Complete I-829 on time — this step cannot be skipped

After receiving the permanent green card:
– If a 6-12 month absence is needed for work in Vietnam: file for a Re-entry Permit before leaving
– If a 1-2 year absence is needed: a Re-entry Permit is mandatory, and Form I-131 should be filed at least 3-4 months before leaving (given 14-17 month processing)
– File Form 1040 as a resident every year — do NOT file 1040-NR
– Keep ties in the United States: property, bank accounts, driving licence, credit cards, health insurance

When seeking naturalisation (5 years after the green card):
– Avoid entirely any trip of over 180 days in the 5 years before N-400
– Ensure at least 30 months of physical presence in the most recent 5 years
– Keep a detailed travel log of departure/return dates for cross-checking when filing N-400

Evidence of ties to keep on file:
– A lease agreement or property ownership documents in the United States
– Annual tax transcripts (Form 1040)
– US bank account statements
– Credit cards and transaction history in the United States
– Health insurance
– Driving licence and voter registration
– School records for children at a US school
– Employment contracts or business dealings in the United States

Summary

EB-5 residence and travel rules are far more complex than the “unrestricted” green card that many investors initially imagine. The three key timeframes — 6 months, 1 year, 2 years — and the distinction between “maintaining the green card” and “accumulating continuous residence for naturalisation” are core knowledge that every EB-5 investor needs to master before receiving the conditional green card.

The Re-entry Permit (Form I-131) is an important legal tool for investors who need to be absent for over 6 months for business, family or investment reasons. However, the current 14-17 month processing time requires investors to plan well ahead, and it cannot be treated as a last-minute solution.

PLI’s immigration advisory team recommends that EB-5 investors plan their residence and travel from the pre-approval stage, consult regularly with a licensed US immigration attorney about their individual circumstances, and always prioritise building genuine ties in the United States rather than relying on legal documents alone. Investing time actually living in the United States in the first few years after receiving the green card is the best way to protect long-term status and pave the way to future US citizenship.