回复：回复：急:为何父母面试后,绿卡在广州移民使馆等待6个月还下不来？

Thank you for your prompt response. My parents all retired last year; used to be professors and physicians at a medical school. What does CCP stand for? Any advice to expediate this security check? I'm thinking of writing a letter to Senator/Congress. Does it help? Thank you again.