小插曲: 我們的Interview notice was returned to USCIS since the address was wrong (actually, USCIS input our wrong address, the apt # was missing). I called to change the address for abount a month, but still didn't get the mail. Finally I emailed DHS and they resent
it to me,when I opened it, it was the interview notice. I almost missed the interview. Hate USCIS, the online message is still not chnaging....