Apparently he's a native american of some kind.
I'm not sure if his true heritage has been revealed.
He CLAIMED that he was a member of the Seminole tribe (even starting a business suggesting he was a native American), but the Seminoles have said that he was not a member. It could be that either he had been told (falsely) that he was native, or he adopted the heritage due to the history/heritage.
He may actually be of Filipino heritage. (Some have traced a potential father to a naturalized immigrant.)
https://www.miamiherald.com/latest-news/article220680590.html