An I-551 stamp (Temporary Lawful Permanent Resident stamp) or a U.S. immigration stamp
in the applicant’s foreign passport and the foreign passport are two separate documents.
Likewise, an Arrival Departure Record (Form I-94) stapled in a foreign passport and
the foreign passport are two separate documents.
A machine-readable immigrant visa (MRIV) issued by the U.S. Department of State and
placed in the foreign passport and the foreign passport are two separate documents.
The Department of Homeland Security (DHS) admission stamp placed partially on the
MRIV is a third document.
While you can use the immigration and admission stamp to establish identity and lawful
alien status, you can use the foreign passport to establish age.