父母在美等綠卡，又收到Ref。要證明自已是否是共產黨員及其活動。這個證明和公證哪裏辦理？父母從來不是黨員，485申請也選的No，不知為什麽會收到這種Ref。先謝了！
-They just write (by using Chinese) a statement addessign that they never joined the Chinese Communist Party, resepetively, and then, you ask one friend of yours to translate it into English following the USCIS requirements. Don't need to 公證.
See this link for the translation requirements:
https://www.immihelp.com/translation-of-non-english-documents-for-us-immigration/
