Romney's Double Standard

How can a candidate oppose a federal abortion amendment while supporting a federal marriage amendment? The Independent Gay Forum reproduces fresh Romney quotes on this question. Jon Rauch sums it up:

So it's official: Romney favors a constitutional amendment to prevent gay couples from marrying, but not to prevent what most pro-lifers regard as infanticide. Not even Marx (Groucho) could find a consistent principle here, unless political expediency counts.

That last sentence could apply to Romney's entire campaign, I'm afraid.