Duncan is from the US Virgin Islands and although he is a US citizen he is not an AMERICAN! HE IS A FOREIGNER! GOT THAT! There is a HUGE difference between being a US citizen and being an American.
I'll also throw in a bit of advice here:
Don't ever go to the US Virgin Islands and tell one of the natives that he is an American. He'll kill you. The natives in the US Virgin Islands consider the US Virgin Islands to be a separate entity, i.e., its own separate country. I agree with them. They just happen to be a US protectorate.
It all started when he declared that the SA Spurs were mostly filthy nasty foreigners.
Apparently I'm not the only one he annoyed here either.