Of course, it depends on how you define race, and one can get very hair-splitting about that. But what's thought of as black or African-American in the US is no

Of course, it depends on how you define race, and one can get very hair-splitting about that. But what's thought of as black or African-American in the US is not unlike mestizo in Latin America -- a blend of varying amounts of two racial backgrounds. The fact that Obama has 50% African and 50% European ancestry probably makes him more "African-American" than if he had 100% African ancestry.