Help about visa application approval letter

來源: 於 2010-04-28 08:19:01 [舊帖] [給我悄悄話] 本文已被閱讀：次

My dad came to USA 10 years ago and I applied visa extension once for him. I plan to invite him to visit again. Is the visa extension approval letter a must for his visa application? if it is, is the I-824 a must to get the copy of the letter? it needs 2-3months and #340! :(