How can someone living in a "Right to Work" state demand the same working rights as in other states?

I have been discriminated against at work because I am a female. My boss does not like women and has gotten rid of all women in supervisory positions or who complain to H.R. about his improper actions....ual harment, harment, discrimination. I have filed a complaint with the E.E.O and they are having trouble doing anything about it because Nevada is a "Right to Work" State. This means when you are hired in Nevada, you have to sign a doent that you can be fired at any time for any or no reason. If you do not sign this doent, you do not get hired. What are laws for if, in Nevada, they mean nothing?