回复：绿卡下来了，父母在国内有回美证，需要把绿卡寄回去吗还是就用回美证回来？

父母回国的时候，回美证已经下来了但是绿卡还在处理。现在绿卡也下来了。想他们下月回美国，需要把绿卡寄回去吗，还是只用回美证回美就行了？
-Either. If they use AP to come back, just tell the IO at the port of entry that their green cards have been approved during their travel in China.