i'm a U.S permanent resident. i want to visit japan for two week.. what do i need a visa to visit japan and reenter back to U.S? the asian agency here, they said i need to do a lot of paper work.. and need to send a form until the japan embassy approve for me come over then i could make a visa.. but can i travel with my green card? and vietnam passport? it my vietnam passport is expired.. where do i renew it?