question about B1/H1

来源: 于 2004-01-31 02:21:00 [旧帖] [给我悄悄话] 本文已被阅读：次

My friend holds a B1 visa valid until middle of Apr, and now is staying in Switzerland. He got an offer of postdoc in U.S. He would like to go to U.S. with B1 and then convert to an H1. Is it possible? Thank you very much in advance.