Where do you stand on the rights of marriage of a person who is intersex? It seems like this would be impossible to answer satisfactorily in a fashion that's logically consistent if you're a person who thinks marriage should only ever be between two people of opposite genders. For those who don't know, an intersex person is someone who's biologically ambiguous in terms of sex, and often possesses an admixture of both male and female genitalia. The precise degree to which an intersex person can be male or female is entirely unique to them.
These seem to be your only options, and they all leave a lot to be desired as far as logic. Do suggest others in case I've missed them.
- Ban them from marriage entirely.
That's unequivocally a gross transgression of their rights, especially since the "gays can get married, just not to another guy" argument is one of the primary pillars of a position defending traditional marriage.
- Let them only marry other intersex people.
So they can marry someone BOTH male and female, but not someone who is only either one of those?
- Let them choose their gender once they're of a certain age, and thereafter only permit marriage for them to someone of the opposite gender of what they decided.
What's to stop them from changing their minds on what their gender is? You could suggest refusing accommodation to such situations to prevent abuse of such a system, but how would you know that it was in fact abuse, and not a genuine confusion on their part?
- Let them marry anyone at all.
How do you concede to this, yet remain adamantly against marriage between people of the same gender?
What I propose is to alter the institution of marriage, if it must remain, so it becomes a civil union that does NOT concern itself with the genders of the people making the union. Any adult should be able to marry another adult, with no regard to whether those people are men, women, or intersex. Your eligibility for marriage to someone else would be entirely gender-neutral. When considering actual biological gender permutations that go beyond the traditional binary we've become accustomed to, this seems to be the only position that stands up to scrutiny.