Following the pattern of recent jurisprudence, the nominally neutral courts that have already substituted in the public square secular religiosity for actual religion now undermine the sacramental character of marriage with their competing, profane version of that institution. There is mysticism to these new deconstructionists, insisting that each 'marriage' has to be considered on its own terms, independent of the universals. Of course, most deconstructionists would, at this point, say that the law should not and would not sanction as marriage the union of a man and 12 women, or a man and a sow. But they cannot, on the principles enunciated by the supreme courts of Vermont or Massachusetts, say why, for the principles are not themselves rational.
No doubt PETA would speak up for the sow.