For EB5 investors, every step in the immigration journey—from filing theI-526E petition to receiving conditional permanent residency—represents progress toward a new life in the United States. But between approval and the arrival of the physical Green Card, there’s an important interim step that often raises questions: the I-551 stamp.
This stamp may be small, but its significance is major. It serves as temporary proof of lawful permanent residency, allowing investors to live, work, travel, and reenter the US while waiting for their actual Green Card. Understanding how the I-551 stamp works—and how it fits into the EB5 process—can help investors avoid unnecessary stress and ensure a smoother transition to life in the US.

What Is the I-551 Stamp?
The I-551 stamp, also known as the ADIT (Alien Documentation, Identification, and Telecommunications) stamp, is placed in a passport by US Citizenship and Immigration Services (USCIS) or Customs and Border Protection (CBP). It is an official endorsement that serves as temporary proof of permanent resident status.
Although the I-551 stamp looks simple—a rectangular stamp with your name, A-number (the “alien registration number” issued by USCIS), and the date—it carries the same legal weight as a Green Card. In most cases, the stamp is valid for up to 12 months and can be used as evidence of your status for employment, international travel, and reentry into the United States.
Why Is It Important for EB5 Visa Holders?
EB5 investors and their family members often face a waiting period between the approval of their immigrant visa or adjustment of status and their receipt of their physical Green Cards. During this time, the I-551 stamp acts as a bridge document—confirming that they have already achieved lawful permanent resident (LPR) status.
This stamp ensures that EB5 investors can:
- Work legally in the United States without needing additional employment authorization.
- Travel internationally and reenter the US without issues.;
- Access financial and legal services, such as applying for a driver’s license or opening a bank account, that require proof of residency.
For EB5 families planning to move, travel, or begin new business ventures immediately after approval, the I-551 stamp provides continuity and peace of mind.
How to Obtain the I-551 Stamp
Once your I-485(Adjustment of Status) application is approved—or once you enter the US on an approved EB5 immigrant visa—you officially become a conditional permanent resident. USCIS will automatically produce and mail your Green Card, but in some cases, processing delays or travel needs make it necessary to request the I-551 stamp before your Green Card arrives.
To get the stamp, you can schedule an appointment at a local USCIS field office through InfoPass. You’ll need to bring your valid passport, proof of identity, Form I-797C approval notice, and evidence of residence in the United States. In certain cases, if your Green Card is lost, stolen, or delayed, the I-551 stamp serves as temporary proof of status while your replacement is processed.

Frequently Asked Questions
How long is the I-551 stamp valid?
Typically, it’s valid for 6 to 12 months, depending on the issuing officer’s discretion. It can be renewed if your Green Card has not yet arrived.
Can I travel internationally with just the I-551 stamp?
Yes. As long as the stamp is valid and unexpired and placed in your unexpired passport, it allows you to reenter the US as a permanent resident.
Does the I-551 stamp grant permanent status?
No. The stamp confirms that you are a lawful permanent resident, but it is only temporary proof while you wait for your physical Green Card.
Final Thoughts
For EB5 investors, the I-551 stamp represents more than a procedural step—it’s confirmation that your investment journey has achieved its intended outcome: lawful permanent residency in the United States. It ensures that your rights and mobility as a new resident are protected while USCIS finalizes your documentation.
At LCR Capital Partners, we understand how valuable clarity and confidence are during this transition. Whether you are awaiting your Green Card or preparing to enter the United States, our team can guide you through every stage—from investment to immigration—to ensure that each milestone, including the receipt of the I-551 stamp, is handled smoothly and successfully.