This represents another moral inversion in the minds of foreign policy leaders. Anyone who would vote other than strongly for Israel finishing the job of polishing off Hamas has not just lost their compass. They have reversed its poles.
At this stage, it's hard to believe that even the incoming communalist Hillary Clinton will be any worse. She at least sometimes acts counter to expectations, one would guess out of a desire to upset them and remain unpredictable.
John Bolton, in the linked article, has another view:
Unfortunately, the Bush administration's failure of leadership on Resolution 1860 has set the precedent. And so on this issue, as on so many others, the new president will, sadly, simply copy his predecessor.Either way, Israel — and America — are screwed.