The case has not been made here for affirmative action
That's because I'm not really interested in making the case for affirmative action and no one else seems keen to do so either. Instead, I've made the case for repealing one of the worst pieces of legislation ever passed by the Senate. There are legitimate arguments against affirmative action, there are none for legislation that actively encourages discrimination.
It seems like a garden variety anti-AA piece of legislation to me. Current job holders are not going to lose their jobs (there is nothing in the act to suggest it was retroactive in its application), and suggesting we need more discrimination to counteract the legacy child effect is sort of like decapitating someone in order to stop a headache. I don't think your case has been persuasively made here.