According to USCIS, a permanent resident needs a valid, unexpired Green Card (Form I-551) to reenter the United States, and short temporary trips usually do not affect status. Longer absences raise the question of whether the person kept the United States as a permanent home, and USCIS describes tools such as the reentry permit for trips of a year or more.
Quick answer
| Situation | What USCIS says |
|---|---|
| Leaving the United States | A passport from the country of citizenship, or a refugee travel document, is generally needed; check the destination’s rules |
| Returning | A valid, unexpired Green Card; a CBP officer may also review other identification |
| Short, temporary trips | Usually do not affect status |
| Absence of more than a year | A general guide for abandonment; a reentry permit (Form I-131) can be filed before leaving |
| Absence of more than two years | A returning resident visa (SB-1) may be considered |
The points above come from the USCIS page on international travel as a permanent resident.
Documents for leaving and returning
For departure, USCIS says a permanent resident generally needs a passport from the country of citizenship or a refugee travel document, and should check visa and entry rules of the destination on the Department of State’s site. Foreign countries may set their own entry or exit rules, such as visas. For return, the person needs a valid Green Card, and an officer may look at a passport, a national ID, or a driver’s license as well. If the card is lost, stolen, or destroyed while abroad, USCIS suggests considering Form I-131A so a carrier can board the person without penalty.
Who decides at the border
USCIS says a Customs and Border Protection (CBP) officer reviews the Green Card and any other identity documents presented, and decides whether the person may enter. The Green Card is the document that matters for reentry, but the officer’s review is part of the process. This is also why the reentry permit is described as not guaranteeing entry: the person must still be found admissible.
What abandonment means
Permanent residence can be lost by abandonment, which is a matter of intent. The USCIS page on maintaining permanent residence lists examples: moving abroad with the intent to live there permanently, declaring oneself a nonimmigrant on U.S. tax returns, or staying outside the United States for an extended period that is not a temporary absence. USCIS gives a general guide, whether the person has been absent for more than a year, and adds that abandonment can still be found on a shorter trip if the person did not intend to keep the United States as a permanent home.
The same maintaining page names four things that decide whether an absence is temporary: the reason for the trip, how long the person planned to be away, other circumstances of the absence, and any events that prolonged it. A trip that was meant to be short but ran long because of an event that prolonged the stay is therefore described differently from a trip planned to last years. How an officer weighs those facts in a particular case is not something a general guide can say.
Factors officers may consider
- Whether the trip was temporary.
- U.S. family and community ties.
- U.S. employment.
- Filing U.S. taxes as a resident.
- A U.S. mailing address, bank accounts, and driver’s license.
- U.S. property or business ownership.
Trips longer than a year
USCIS suggests considering Form I-131 for a reentry permit before leaving. It lets a permanent or conditional permanent resident seek admission during the permit’s validity without a returning resident visa from a U.S. consulate. It does not guarantee entry, because the person must still be admissible, but it helps show the intent to live in the United States permanently. Staying abroad more than two years means a reentry permit issued before departure will have expired. The USCIS glossary uses the same one-year line, saying a person should apply for a reentry permit if they will be outside the United States for one year or more.
The permit has to be requested before leaving. The USCIS page describes it as an application made before departure, so it is a planning step and not a repair after the fact.
Trips longer than two years
USCIS says to consider applying for a returning resident visa (SB-1) at the nearest U.S. embassy or consulate. The applicant must show eligibility for an immigrant visa and complete a medical exam. An exception exists for the spouse or child of a member of the U.S. Armed Forces or a U.S. civilian government employee stationed abroad on official orders. USCIS points to the Department of State’s returning resident visa page for details.
Effect on citizenship
Absences of more than six months may disrupt the continuous residence that naturalization requires. For absences of one year or longer, USCIS points to Form N-470, Application to Preserve Residence for Naturalization Purposes, which is available only in the situations described in the Policy Manual. The USCIS page on continuous residence and physical presence has more on the naturalization side. The point to notice is that the thresholds differ: a trip can be harmless for keeping the Green Card and still matter for a later citizenship application.
A planning order for a long trip
- Check the passport or refugee travel document and the destination’s entry rules.
- Check that the Green Card will be valid on the date of return.
- If the trip may reach a year or more, consider Form I-131 for a reentry permit before leaving.
- If a stay of a year or more could affect a later citizenship application, read about Form N-470.
- Keep records of U.S. ties, such as taxes filed as a resident, a U.S. address, and accounts.
Frequently asked questions
Is a passport enough to return?
No. USCIS says a valid, unexpired Green Card is needed to reenter.
Does an expired card block reentry?
The USCIS page requires a valid, unexpired card. See Green Card expiration and renewal for replacement.
Is one year the limit?
No. It is a general guide. Abandonment depends on intent and on the facts of the trip.
Does a reentry permit guarantee entry?
No. The person must still be admissible.
What if the card is lost while abroad?
USCIS says Form I-131A may be needed so that a carrier can bring the person to the United States without being penalized. A licensed immigration attorney or USCIS can address a personal case.
Related reading
- How permanent resident status can be lost
- Green Card expiration and renewal
- A-Number, USCIS number, and receipt number
- All Green Card basics guides
About this guide
This website is for information only. It is not affiliated with the U.S. government, does not give legal advice or consultations, and does not offer application services. A personal case belongs with USCIS or a licensed immigration attorney, and the current official pages control.
Last verified: October 2026. Sources: USCIS page on international travel as a permanent resident; USCIS page on maintaining permanent residence; USCIS glossary.