round trip or one way ticket?

来源: 于 2003-11-29 08:46:00 [旧帖] [给我悄悄话] 本文已被阅读：次

my parents will visit me next month. they got visitor visa. do they need to get round trip ticket or one way ticket? I heard that if they come here with one way ticket, immigration offcer will stop them from entry. is that true?
thanks