關於「Supporting civil documents」標籤，搜尋引擎有相關的訊息討論：

Civil Documents - travel.govtravel.state.gov › immigrate › step-7-collect-civil-documentsCivil Documents FAQs - travel.govtravel.state.gov › content › travel › us-visas › immigrateImmigrant Visa - List of Required and Supplemental Documentsweb-archive-2017.ait.org.tw › iv-requi