If the US has already ensured and protected equality with each individual, then can Feminism in this day..?

Affirmative action says that because of prejudice you are not given an equal chance to succeed, or show your worth by employers, so the government is going to force employers to give you a chance to prove yourself. Affirmative action was a success for blacks, and if it is used for other groups who are not equally represented, why specifically leave out women?