其中有一项叫做：PHOTOGRAPHS, 请问这是指什么，是我与家人的合照，还是我父母的单人头像照？
-It is the photos of your father and mother, respectively, for the visa application (two photos with US passport size each person).
还有一个问题，Proof of US Domicile 是什么样的文件？
-It is the copies of your US citizenship certificate, your tax return/tax transcript and W2 of 2018, etc. to prove your living in US and have enough financial ability to sponsor your parents. You also need to provide your original birth certificate to your parents for the interview.
万分感谢！
