[mike00632]

But it's difficult. Nobody likes to confront people and tell them that their views on women's biology affecting their engineering skills are sexist. It also causes strife in the workplace.

What I suggest is to just be polite to your coworkers and let HR worry about the hiring process. Don't say anything to your coworkers that could suggest they are somehow inferior or have "bad" genetic traits. This seems like basic human civility that gets tossed out the window when someone has a right-wing view about a minority or women.