我太太和孩子2001年來美國，入境發了一個F-2的 I-94白卡
後來我們身份轉換，改為H-1，太太和孩子改為H-4，後來在2007年又由於申請I-485改
為EAD卡，也拿到AP返鄉證；
請問， 他們如果返回中國， 他們的I-94白卡是否仍然有效(11年沒有用過)，有沒
有作廢？
-The F2 I-94 is invalid, but keep the copy of it in your record, just in case.
隨著他們身份的改變，I-94白卡需要更新麽？？
-When they got the H4 status, they should have got the H4 I-94 (with the H4 approval notice), right? That H4 I-94 has overriden the F2 I-94.
返回美國還需要提交什麽材料？？
-When they leave, they need to sub-mit the H4 I-94 (or any latest I-94) to the airlines as everyone does. If they use AP to travel, just bring the I-485 receipt with them. They still need to fill the I-94 in the airplane and provide it to the CBP officer to get the I-94 endoresement at the port of entry as they did before (entered with F2 visa).
