沒问题的 USClS 不直接收信, 都是contract out 的。从收信那一段时间起第一歩是检查所有 application 是否完整 If. YES .....MOVE ON TO USCIS 发I797 acceptance notice etc If NO........MOVE ON TO REJECTION APPLICATION NOTICE. Eg. Failure to sign all documents. 说是 Contract out, 但是收信中心是和USCIS NSC OR TSC 连在一起同一地点。收信中 心只会做两件事 YES or No for complete application received. I797 都由USCIS 来发