Well, sure, women are the richer sex, if by "richer" you mean "making less money." If you take some tiny demographic slices—single, childless college-educated women in major urban areas—those women make more than men their age. But enough of me blathering. Here's some stats:
I wrote about this subject on Equal Pay Day, before I came across Bryce Covert's fabulous Nation post "How to Close the Gender Wage Gap In Just Seven Easy* Steps." (Do read it for serious policy ideas written with verve.) One of her steps: raise the minimum wage. See? Easy!