In this country, women's restrooms have stalls.  No one in a women's restroom is exposed to anyone else's nudity, unless they purposefully peek under the stalls.  And what exactly would be changed by this law?  Are you personally going to stand outside every restroom and locker room in town, demanding to see birth certificates and doing strip searches?  Or do you propose to pay municipal employees to do that? By the way that would be illegal so no use you volunteering.