我是今年7月中旬给我父母申请了绿卡。priority date是7月22。10月26我们收到信说可能不需要面试了，但是由于人多，所以他们拿到绿卡的时间可能要延长。
我妈要1月中旬回国。她想要5月中旬才回来。我再想这之间如果绿卡下来了，我是需要寄给我妈还是不寄？如果不寄她仍然需要持AP入境，如果有绿卡还持AP，请问会有问题吗？
-Just use the AP to come back, but they need to tell the IO at the port of entry that their I-485 was approved during their travel in China. If your parents do not know English, you may write a letter for them to explain it to the IO, thus your parents just present the letter to the IO when they enter US.
还有有些担心面试。信上没有说一定不要面试，只是说很可能不要，这样会突然被要求面试吗？万分感激
-Then, you may bring the appointment notice to the local USCIS Office to ask the IO to reschedule it.
