Lately the transgender community's push for more gender-neutral public restrooms has drawn a fair amount of attention, support, and criticism. The proliferation of unisex bathrooms seems like a logical solution to the tricky problem of figuring out who gets to pee where. Providing restrooms where all are welcome shouldn't be compulsory; there are both logistical and ideological reasons why such a mandate is a bad idea. But what's holding us back from opening up more restroom doors? Despite what you might think, Elizabeth Nolan Brown writes in the July issue of Reason, public restrooms have not always been gender segregated.