Do yall honestly have a problem with outlawing systemic racism?
Yes. They do. The specific problem is that some people in power really really want to be racist, and will try to find any possible way of enacting racist policies without being openly racist.
Want more black people picking cotton but can't because non-prisoner slave labour is illegal? Simple! Just quietly defund all public services from a majority-black area (except the police of course), and then start making arrests when people gotta commit crimes just to survive. Now you have your black people under ball and chain but it's okay, because he committed a crime!
Part of the reason why AA is so effective is because it partially defangs these more covert attempts at systemic racism. Because even if you do have these stealth-racism tactics, you can't stop, say 30% of university undergraduates from being African American