Most mixed race people in the US identify with one so calld "race" because the US is a predominately monoracial identifying nation. The Bass' mother is one half mulatto8but black] and Native American and she identifies as solely black, though acknowledging her obvious Native American ancestry, so not all mixed race people are confused. True, you have some people who do seem confused about how to identify, but so are white Americans who want to identify as Aryans or members of the so called "Aryan race", when in reality they're just white Americans or Eurodescendant Americans, no more no less. Like it or not the world is already a smorgasboard of people of different mixtures and if the one drop rule still really existed over one third of white Americans would be non-white.
And William Joyce, do some reading on the genetic and phenotypic variation of people of African descent, we have the highest phenotypic and genetic variation of anyone in the world, well at least in Africa, sub-Saharan Africa, so black people by default do not all look alike and or similar. You have black Africans with naturally straight hai, some with nappy hair, some with lighter skin, some with very dark skin, some with thin lips and some with full lips, all of this exists in sub-Saharan Africa.