A society that seeks to tamper with marriage will also inevitably seek to tamper with biology. This example via Elizabeth Marquadt at Family Scholars:
"A Harris County judge has reached a decision in an unusual custody battle involving a surrogate and two Houston men. The judge has determined the woman who gave birth is, in fact, a mother."
For background, see Jennifer Lahl and I writing about the case in HuffPost, "Are Women Easy Bake Ovens?”