請教有經驗的朋友， 我剛開始給父母辦綠卡， 可我母親有急事要回國一趟， 估計2個月就回來。 我的問題是：
1。她此次回國， 兩個月後回來， 海關入境會不會 拒絕她再進入美國？
-Yes. It is very possible. She needs to have Advanced parole (AP) to travel to China.
因為她已遞交了移民申請？
2。在她留中國期間，她可以在廣州簽移民簽證嗎？
-Yes, but she had better file I-864 to change I-485 to consular processing to apply for the immigration visa in Guangzhou after she receives the I-485 filing receipt if she has to leave US by this time if she has no AP in hand.
3。在她留中國期間， 如果收到打指模的要求， 是否可以重新預約。
-If she leave US without AP, her I-485 is invalid and thus, the biometrics is useless to her.
