尊敬的8老師，您好！我父母持 IR5 簽證入美。他們來美國後，我支付了 $165/person 綠卡費用，有 email 為證。現已經過了60天。非常不幸的是，兩人的 receipt number 遺失。請問我如何向有關部門去查詢？
-What kind of receipt number do you mean, your payment proof? You can calll USCIS and ask when your parents will receive the green card. When you contact USCIS, tell USCIS your USCIS ELIS account number you created and used to pay the immigrant fee, the date you paid the fee, and your parents' IR5 visa number or A#.
在此，先謝過尊敬的8老師。
