I do not think you need to cancel the maple card.

來源: 於 2006-01-24 21:51:31 [舊帖] [給我悄悄話] 本文已被閱讀：次

If you did not reside in Canada within 3 years after you got the card, it will expire automatically. I never heard any bad effect.

You can apply for your green card in US. US and Canada are two different countries.