Santorum compares gay marriage to polygamy again

I'd be curious how Santorum would explain permitting inter-racial marriage in the late 60s, and why that didn't lead to polygamy?  Of course, his answer will be a non sequitur - that race isn't a choice, sexual orientation is - but even if he were right (and he's not), that doesn't answer the question.  The fact remains that in the  late 1960s the Supreme Court expanded the definition of marriage to unequivocally mean blacks marrying whites.  Yet that expansion didn't lead to any slipper slope.  Why was that?

Don't expect an intelligent answer from Santorum.  He's as dim as he is dogmatic.  ThinkProgress has today's rantings.

Oh, and don't forget to visit Spreading Santorum (the link is NOT safe for work).