Permanent Resident Status
If you are a permanent resident of the U.S., you have the right to reside and work in the U.S. on a permanent basis. Uou are required to show proof of permanent resident status when entering the U.S.:
1, You should have a “green card”, Permanent Resident Card or Alien Registration Receipt Card (Form I-551) which contains your picture, biographic data, and from 2010 to the present, with state-of-the-art technology which prevents counterfeiting, obstructs tampering, and facilitates quick and accurate authentication of the card.
USCIS began issuing the redesigned I-551s on May 11, 2010, to newly approved LPRs and to those who sought renewal or replacement cards. The I-551s are valid for ten (10) years for LPRs and two (2) years for conditional residents. It must be renewed once it expires.
2, a Foreign passport that contains a temporary I-551 stamp or temporary I-551 printed notation on a machine-readable immigrant visa (MRIV)