American Honda use to import cars from Japan. My car (1992 Civic) was one of the last models that ever came from Japan. On the radiator support, there should be a black/gold sticker saying "made/assembled in japan".
from 1993+ a lot of civics were made and assembled in Canada or Ohio. I think the only cars that still come from Japan are the NSX, S2000 and Prelude. Im not too sure about Accords and Civics anymore.