How often does uscis check their PO Box

來源: 於 2009-10-06 20:52:15 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

, I mailed an express mail to the PO BOX specified on RFE. USPS status showed a notice left.

Thanks for response from any one who has such information.