Simplifying

Last week I wrote about Facebook's decision that there are fifty genders in the world of we humans. To me, it seemed to go beyond the bounds of rationality. But I do recognize that there are gay people and transsexuals living among us. More and more countries are recognizing this as well and have allowed people to register themselves as neither male nor female in legal documents. What they register as varies. In Australia it's nonspecific  or indeterminate. In Germany it's X. What will they be registered as in America?