You don't have to if you just

来源: 于 2003-11-15 23:33:00 [旧帖] [给我悄悄话] 本文已被阅读：次

want to stay in the US and work. The notice is to give u the authorization to work in the US.

when u go outside of US, u will need to apply for a H-1B visa to come back in.