You don't have to do that, just wait for their RFE.

来源: 于 2008-02-29 07:28:47 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

CIS will justify whether they need your employment verification letter or not, when your 485 is being processed. It's not a requirement when you change employer.