Friends, Our I-485 was approved on Dec 28, 2004. With travel pending on Dec 31st, we went to the local USCIS office (JFK Building, Boston). The officer refused to stamp us without the approval letter, he just would not accept the e-mail, or the online approval printout. He was rude, did not care that my 20-month old daughter was there with us, did not care that we had our India-travel tickets with us. He specifically asked us not to travel outside without getting stamped. It means a loss of $750 in postponing the tickets.