When shall I file I-140?

来源: 于 2006-12-15 20:19:34 [旧帖] [给我悄悄话] 本文已被阅读：次

I now have H1B in its first 3 years. I am wondering when I shall file I-140. I am afraid that this will affect the renew of H1B three years later. Is it true?