請問8老師：國內美領館CP移民麵簽後，在current後需要補充提交最新體檢報告和護照以獲得移民簽證，副申請人因為在美國讀書，暫時不方便同主申請人一起補充提交上述材料，請問副申請人材料是否可以後麵補交？
-Yes, but need to do it within one year from the date NVC sent you the instruction for these documents.
如果補交材料流程會怎樣
到時候會不會因為排期倒退而沒有簽證的風險？
-Yes. The derivative applicant also can choose to file I-485 within US to get the green card after the principal applicant enters US using the immigrant visa, thus he/she does not need to provide the documents to apply for the immigrant visa in China.
謝謝！
