If H4 works as volunteer(no paid internship), but need EAD,

来源: 于 2009-05-12 10:10:02 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

H4 will be automatically changed to be AOS? thanks

How does the USCIS know that H4 used EAD?