A question about "affirmative action"

The United States Supreme Court is hearing the case today brought before it by Abigail Fisher, who is asserting that because of race-preferential policies at the University of Texas at Austin, she was denied enrollment at because she is white.

I want to put a question out there, because I think it's more than valid:

If a member of a racial minority can easily become the President of the United States, then what use is there for academic admission or job-hiring practices that are based on racial preference?

Come to think of it, what use is there for the NAACP? I mean, seems like it's pretty hard to advance much further than the White House. For anybody regardless of ethnicity, for that matter...