8老师：
您好！
我已于2013通过EB1A获得绿卡，老公一直在国内工作。所以没替他申请。现在准备以follow-to-join的方式替他申请。有关这方面资料实在太少，问题又多。麻烦您了。先谢谢了！
问题1：递交I-824表，需要什么材料证明老公符合这类，除了结婚证公证外，还需要什么？
-Read the I-824 Instructions. It should include copies of your marriage certificate, your green card (front and back sides), your I-140 approval notice (I-797A), and I-485 approval notice.
问题2：如果I-824表批准后，他需要准备什么材料或表格去广州美国大使馆申请签证？
-USCIS will forward the I-824 to NVC after it is approved, then NVC will contact you and send you the instructions.
问题3：签证获批后，是进入美国后拿绿卡吗？
-Yes. He will be green card holder immediately after he enters US using the immigrant visa, and USCIS will send him the plastic green card in about one month.
还是有别的相关手续吗？-No.
问题4：在这期间他能以B2签证过来探亲吗？有什么风险吗？-Probably no due to immigrant intent.
问题5：党员身份会影响签证及绿卡申请吗？请给建议？
-Normally no, but he needs to provide the statement addressing that why he joined the Party,, and it will be better if he withdraws the Party membership.
