My friend is traveling into Canada via private aircraft tomorrow. He is 1/2 Korean, but is a USA citizen.

He forgot his passport at home, but has a valid USA drivers license, and will have a copy (fax) of his USA passport. Furthermore, he has been to Canada 15+ years ago (i.e. should be in their systems).

Will he have any problems going into Canada? (He knows he will need his passport to come back to the USA...he will get it overnighted to Canada).

Any other advice will be appreciated.