“You can not enter US before your mother enters US”不太理解，難道是我一定要回國簽證嗎？
-Not necessary. But if you do, you have to enter US together with your mother or after your mother enters US because your mother is the primary beneficiary, and you are your mother's derivative.
我現在還在美國上學，不希望回中國和媽媽一起簽證，怕萬一回不來。如果我媽媽先去簽證，我現在需要準備什麽？
-Prepare the documents for I-485 filing such as your birth certificate, the I-864 with the support documents from your mother's brother/sister who sponsored your mother, physical exam (I-693), copy of your I-20 and I-94, copy of your passport information pages including the F-1 visa stamp and entry stamp, etc. (see the I-485 Instructions).
I-485何時填寫？
-You only can file I-485 after your mother enters US using her immigration visa (provide the copy of your mother's green card, copies of her immigration visa page and the stamp of her entry on her passport).
我現在需要準備DS260，
-No DS260 anymore.
出生證明等一係列材料嗎？還有什麽需要注意的，準備的東西，望8老師一並答複。
-Not necessary. But if you do, you have to enter US together with your mother or after your mother enters US because your mother is the primary beneficiary, and you are your mother's derivative.
我現在還在美國上學，不希望回中國和媽媽一起簽證，怕萬一回不來。如果我媽媽先去簽證，我現在需要準備什麽？
-Prepare the documents for I-485 filing such as your birth certificate, the I-864 with the support documents from your mother's brother/sister who sponsored your mother, physical exam (I-693), copy of your I-20 and I-94, copy of your passport information pages including the F-1 visa stamp and entry stamp, etc. (see the I-485 Instructions).
I-485何時填寫？
-You only can file I-485 after your mother enters US using her immigration visa (provide the copy of your mother's green card, copies of her immigration visa page and the stamp of her entry on her passport).
我現在需要準備DS260，
-No DS260 anymore.
出生證明等一係列材料嗎？還有什麽需要注意的，準備的東西，望8老師一並答複。
