父母早上綠卡麵試剛通過，特此謝謝PJ, 86等網友的幫助

沒有你們的答疑，我不知道要兜多少圈子了。以下是我記錄的時間表：

居住地、申請地：西雅圖

1/10/2011: Mailed out the applications
1/12/2011: USPS Delivery Confirmation
1/14/2011: USCIS Emailed out Confirmation
1/18/2011: Applicastion Fee/Check deposited
1/20/2011: Biometrics notice dated
2/11/2011: Biometrics appt
2/8: We sent RFE (Mother's medical report incomplete - doctor's fault)
2/10: USPS Delivery Confirmation
2/15: USCIS acknowledged receipt of evidence
3/2: USCIS sent out interview appt letter for interview on 4/4
4/4: Passed interview - note: no need to go early.  We waited 2+ hours until the scheduled time