Every time that you said “African-American,” I hope that you were referring to someone who was born in Africa.
About 2/3 of Blacks, I know, dislike being called African-Americans. They know that, since a dictionary definition of African is a resident of Africa, an African-American is anyone who was born in Africa, immigrated to the U.S., and became an American citizen. This definition includes a few races, so whether someone is an African-American cant be determined by his or her skin color.
The first black democrat congressman was elected in 1934. Before that, our country had about 30 black congressmen, and all of them were Republicans.
Finn Aagaard, the late gunwriter, falls into this category. He was born in Kenya (ironically) and moved to the U.S., so even though he was as white as the day is long, he was an African-American.