Do employers have degree requirements? A 1970 SCOTUS case put strong constraints on what employers could require, at least with respect to high school diplomas. The same logic would apply to college degrees. Unless a direct link to a job (not just a general linkage) could be demonstrated, if there is a de facto racial discriminatory effect (and there would be, just from different rates of graduation from college) then the requirement would be illegal.

I've been waiting for someone with a bone to pick against higher education to file a lawsuit over this. It could devalue college degrees.

https://en.wikipedia.org/wiki/Griggs_v._Duke_Power_Co.