找到答案了:不需要A-number

来源: 2016-01-17 16:14:25 [旧帖] [给我悄悄话] 本文已被阅读:

http://www.nolo.com/legal-encyclopedia/free-books/fiance-marriage-visa-book/chapter7-8.html

Question 10: A U.S. citizen can put N/A here, even if you were once a lawful permanent resident and had an Alien Registration Number (known as an A-Number).