8老师:您好!
My husband 绿卡申请被拒,理由因是党员。已过了半年。他现在可以申请B2签证吗?
-Probably it is difficult due to immigrant intent, but not hurt o try.
By the way, Communist Party membership should not have to be the denial reason of immigrant visa application as long as the purpose of joining the Party was for employment, etc., and he just needs to explain it and provide the statement addressing why he joined the Party.
He can apply for inadmission waiver if the VO still insist not to issue him the immigrant visa by filing I-601. See this link (consult an immigrtant lawyer if necessary):
如果他拿到B2签证,来美国后可以申请绿卡吗?
期待着8老师在百忙之中给与指导!