POE experience after succesful CP @ Islamabad
The Immigrant Visa looks like a H1B1 visa stamp but the information is obviously different. The embassy also hands out a packet with top right part perforated. It has a white paper on the front which has your picture and information on it.
I landed at Chicago O'Hare airport at about 3:15 PM. While in the plane, I had filled only the customs forms and not the I-94 white form. After landing, I went to the New Immigrant line. The officer looked at the IV and took the packet from me. He sent me to the NSEERS special registration line.