GC Application Question

來源: 於 2005-05-20 10:14:20 [舊帖] [給我悄悄話] 本文已被閱讀：次

I got a recommendation letter from a member of national acedamy of engineering after I had mailed my I-140 application. (I have already recieved the reciept from USCIS). Do I need to wait until I get the reference from USCIS or mail this letter to USCIS right now?