No Title
Guys,
Just got my GC through interview and the passport was stamped during the interview. I do not know how the I485 approval notice looks in non-interview cases, however based on my notice the passport stamping is not mandatory. Passport stamping allows you to travel while waiting for the greencard, however according to my notice the rest of the process (to generate the platic card) continues independent of the stamping.
So it is more important to have access to the mail box specified in the GC application than to actually stamp the passport.
Again, I may be wrong, just wanted to add my 2 cents.