To the outside world, it’s a “Green Card,” but to the U.S. government, your proof of status is officially known as Form I-551. This document serves as the definitive evidence that you are a Lawful Permanent Resident (LPR) with the right to live and work indefinitely in the United States.
In recent years, USCIS has broadened the ways it issues temporary I‑551 evidence so residents are not stuck in limbo during renewals or replacements.
While the physical card is the standard, USCIS utilizes temporary “ADIT” stamps to ensure that residents aren’t trapped in administrative limbo while waiting for a renewal or a replacement of a lost card.
The Three Faces of Form I-551
Depending on where you are in your immigration journey, your Form I-551 evidence might look different:
- The Physical Green Card: The standard 10-year or 2-year plastic card. On modern cards, you’ll typically see ‘Form I‑551’ printed on the back, confirming that the card is official proof of permanent residence.
- The ADIT Stamp (I-551 Stamp): A wet-ink stamp placed in your unexpired foreign passport by a USCIS officer. This is often used if your physical card is lost, stolen, or delayed.
- The MRIV Notation: For new immigrants entering from abroad, your machine-readable immigrant visa (MRIV) contains the printed text: “Upon endorsement serves as temporary I-551 evidencing permanent residence for 1 year.”
2026 Update: Obtaining an I-551 Stamp by Mail
A significant operational shift in 2026 is the ability to obtain temporary Form I-551 evidence without a trip to a USCIS field office. If you have a pending Form I-90 (replacement) or I-751 (removal of conditions), you may be eligible for the USCIS Mail Delivery Process.
Under this system, you call the USCIS Contact Center to request evidence of status. If an in-person appointment isn’t necessary, USCIS will mail you a Form I-94 with an ADIT stamp, a DHS seal, and your photo. This document counts as a List A document for I‑9 purposes, and in many cases it is also accepted for boarding and re‑entry. Because airline and CBP practices can vary, travelers should verify current guidance before international trips.
Travel and Work Authorization
Form I‑551 is the primary documentary proof of lawful permanent residence and carries significant benefits for travel and employment:
- International Re-entry: An unexpired I-551 (stamp or card) allows you to board a flight to the U.S. and pass through CBP inspection. If your card is expired but you have a 36-month extension notice, that combination also counts as valid I-551 evidence in 2026.
- Employment Eligibility: For the Form I-9, a valid I-551 is a “List A” document, meaning it establishes both identity and work authorization. Employers are legally required to accept a valid ADIT stamp as proof of your right to work.
Common Scenarios for Temporary Evidence
You generally only need to seek a temporary Form I-551 stamp if:
- Your physical Green Card has been lost, stolen, or destroyed.
- Your 10-year card has expired and your I-90 receipt extension is nearing its end.
- You are a new immigrant who has entered the U.S. but has not yet received the physical card in the mail.
- You have an urgent need to travel or prove work authorization and your physical card contains a clerical error.
Conclusion: Maintaining Your Proof of Status
Whether it is a high-tech plastic card or a simple ink stamp in your passport, Form I-551 is the document that secures your life in America. In 2026, the key is to be proactive. By understanding how to utilize the new mail-in ADIT stamp process and keeping a close eye on your card’s expiration, you can ensure that your right to travel, work, and live in the U.S. remains undisputed.
