So, the moral of your story is: minority employees are underpaid because they never say "no" to low salary they are offered? Or maybe you are saying that possessing some basic negotiation skills you don't have makes me evil? I don't follow your logic here.
Employer to (theoretically) underpaid/under-represented minority: I offer you x.
Underpaid minority: accepted.
Employer to market-rate perspective employee: I offer you x.
market-rate perspective employee: nope.
Employer to market-rate perspective employee: how about X+25K?
market-rate perspective employee: sounds good.
This bill tries to fix a symptom of the problem - but the underlying dynamics causing the pay disparity will remain.