What is an ADIT stamp?

What is an ADIT stamp? A Lawful Permanent Resident (LPR) may re-enter the United States with a valid Alien Documentation Identification and Telecommunication (ADIT) Stamp. It is also called I-551 stamp. The ADIT Stamp is provided to a LPR as temporary evidence of his or her resident status. It may be affixed to a passport…