Re: I-551 stamp isn't enough
 

Perhaps this will help prove your status at the registar's office:


http://www.ins.usdoj.gov/graphics/howdoi/replace.htm

A Permanent Resident Card, commonly known as a Green Card, is evidence of your status as a lawful permanent resident with a right to live and work permanently in the United States. It also is evidence of your registration in accordance with United States immigration laws. The Permanent Resident Card is also called INS Form I-551.

Re: Re: I-551 stamp isn't enough
 

And....
Correct me if I'm wrong, at the POE they stamp an I-551 into
your passport.
Which effectively is a temporary green card, until they send you the real thing.
:o)