The former Immigration and Naturalization Service (INS), now the DHS, issued Form
            I-151 (Alien Registration Receipt Card), commonly called a “green card,” to aliens
            from July 1946 through late 1978. The form is no longer valid evidence for enumeration
            purposes and INS replaced it with Form I-551 (Permanent Resident Card).
         
         The I-151 lacked security features and presented more opportunities for alteration
            and fraud than other immigration documents.
         
         From 1992 through 1996, INS conducted a “Green Card Replacement” project to replace
            the I-151 cards in circulation. Some applicants (e.g., homebound elderly or nursing
            home residents) may have been unable to replace their old I-151 cards. Although the
            card is not a valid immigration document, the person may still retain lawful permanent
            resident status with DHS.