八老師，我是公民，為父母申請了綠卡 (父母在國內)，拿到I-797， 大概１個月後發EMAIL 給NVC 問情況，昨天受到回複如下，我看了很糊塗，I797 就是approval for petition了嗎？
-There are different I-797 and you can read the words on the I-797 to determine whether it is approval notice. From the following NVC reply you provided below, your I-797 is the approval notice.
請您告訴我現在我需要做什麽嗎？萬分感謝您的幫助！
-Just wait and USCIS will send the approved case to NVC. You may contact USCIS to see whether they have forwarded the case to NVC or when they will do it.
Please be advised that the National Visa Center (NVC) has received your inquiry and the attached I-797 Notice of Action - Approval Notice. Unfortunately, we do not have record of receiving your approved petition from U.S. Citizenship and Immigration Services. The NVC will contact USCIS on your behalf for information on the location of this petition.
