The effect that it will have across the country is this:

Lets say that at your office there are 2 employees up for promotion. 1 white and 1 non white. They both test well but the white employee tests better in some areas than the other. The company wants to promote the white guy but they can't because they already have 3 white supervisors and no non-white supervisors. So they hire the non-white even though he is not as qualified because they are afraid that if they do not then the employee can call it discrimination.

Post decision the employer can now not worry about the lawsuit for not hiring the non-white.

Let me be clear that when I say white or non-white this can work with ANY race and could go for gender as well. This is a very slippery decision.

If you are the only person of your race working at a place and are constantly denied promotions and others are getting them this decision, IMO, takes away your right to sue the employer for discrimination.

I think the decision goes too far. I personally do not like hiring someone based on a quota but if my right to sue goes away when I am clearly being discriminated against, but a test says that I am deficient in some way and this is what my employer is basing everything on. Clearly that sucks.