By figuring out why they're under represented and fixing those? Is it income disparity? Single parent households? Lack of funding for schools in poor communiti

By figuring out why they're under represented and fixing those? Is it income disparity? Single parent households? Lack of funding for schools in poor communities? Why can't we focus on addressing those and leveling the playing field rather than picking one way to group people (by race in this case) and artificially tipping the scale? Why not by gender, or family income, or height or beauty? Those all have impacts to life outcome too.