Based on that description I don't think I can support these laws at all, much less applying them to unpaid interns. It doesn't really make sense to treat sexual harassment as a form of sex-based discrimination. Sexual harassers should be punished for their actions (ie, the act of sexual harassment itself), not whatever sexist motivation may or may not have been going through their head at the time they committed the crime. Same reason I oppose hate crime(s) legislation. Furthermore, as a supporter of free speech I can't support making it illegal for sexist jerks to make dumb comments.
Finally, would this bill apply to just Regional anti-discrimination laws or State and local laws as well?