8老師，早上好：
又給USCIS打電話了，說可以用following-to-join benefit.然後他讀到下文，說我需要提交I-824 form.
-Not need I-824 which is for you to apply for the immigrant visa outside US. You just need to filel I-485 within US. The immigration law is complicate and even some IO or immigrant lawyers are confused, and it is very normal.
1.句子中說you may submit the following，我一定要提交I-824嗎？剛才查了，filing fee is $405. 如果may表示不是必須的，就不想提交了。昨晚寫了一個可以用following-to-join benefit的說明。感覺這個官員也是照本宣科，說以下所列的文件都需要。計劃趕在費用漲價之前再發一次試試，用老公現有的文件：The copy of green card，I-140 approval notice，I-485 approval notice。
If your family member falls into this category and you adjusted to permanent residency in the United States, you may submit the following:
- Form I-824, Application for Action on an Approved Application or Petition
- A copy of the original application or petition that you used to apply for immigrant status
- A copy of Form I-797, Notice of Action, for the original application or petition
- A copy of your Form I-551 (green card)
