A black male President with a white male VP is a much smaller hurdle than a black/indian woman Pres with another woman VP. Remember black men got the right to vote before women did.
I said it when Hilary was nominated to run against Trump: America is more sexist than they are racist. They will accept a black man to run a business/country/church before a white woman. The only reason Kamala has a chance is because she is running against the fucking craziest shitstain they could find.