The idea that a poor African-American woman should be able to overcome oppression is limited, given it is usually promoted by and within the "white supremacist" society that seeks benefit from no other group than that their own race. This disallows any chances of there being a high percentage of wealthy African-American woman in the United States because the values of capitalism in which it's a "class division between those who own and control and those who do not", ensure the continuation of the formers, based on the make up of who is in charge of major businesses today.(Mantsios, p344).
Classism, racism and surprisingly sexism are all viable options a big company can use to shunt away aspiring African-American women from achieving wealthy a status that has been deprived of them and their forefathers since the late 1800's. Common knowledge shows those single African-American women are the most oppressed group.
In the event of a job interview, a prospective "white supremist" employer interviews an African-American woman for a job; he may make the unconscious mistake of basing her qualifications on her class, race and/or sex. When someone fits the mold of what you don't want three times over, the chances are slim to none that the employer is going to take the prospective's work history into consideration. Simple regulations such as a disclaimer on a job application saying "we don't discriminate based on race, class or sex" maybe ok for getting an aspiring applicant in the door, but that doesn't mean the boss cannot use his prejudices to continue to oppress and make it harder for any "equal opportunity" to take place. All the applicant can do is sweat it out and hope to make an impression that could change the point of view of the "white supremacist".