请问8老师：我最近成为公民了，正担保父母办移民。我爸退休前是中共党员。在填I-485 表的Part 3 Processing Information C. 的时候要不要 disclose这一条？ 如果disclose的话，对移民申请的批准会有不利影响吗？ 多谢！
-Your father had better tell the truth and explain why he joined the party (e.g. employment, promotion). You can google to find the smaple letters, etc.
