回复：请问，父母来美探亲给了多次入境的签证，

来源: 于 2003-12-10 13:42:00 [旧帖] [给我悄悄话] 本文已被阅读：次

Even with only single entry B visa, they can return to US with their unexpired I-94 from Canada if less than 30 days in Canada. M-entry visa will really make a difference only when they go out of North America(Can, Mex) and want to re-enter, Or they stay in Canada too long then want to re-enter US.