I was born in South Bend, Indiana, but have lived most of my life in Seattle, Washington (both U.S.A.). Like most Americans, my ancestry is all over the place; Italian, German, Irish, Scottish, Norwegan, English, French, but I'm all white dude. And my grandfather was Canadian.
Many Japanese students would say, "So you're not really American?" No, that's what it is to be American. In Japan, most everyone is 100% Japanese (maybe with a little Chinese mixed in or something) so the thought of such a mix really boggled their minds.