当父母去面试时要带上无犯罪记录，请问如果在几十年前文革期间有过犯罪记录，政治问题，是不是会影响签证？
-Probably no.
无犯罪记录是必须要带的吗？
-Yes if they apply for the immigrant visa in China. Not need it if they apply for non-immigrant visa (e.g. B-2) in China. Also not need it if they file I-485 within US, but they still need to provide the case documents such as arrest record from the Police Department, the sentence documents from the Court.
谢谢回复。
