In his latest column, George Will charges that Senate Republicans have had an “incoherent response to the Supreme Court vacancy” that “is a partisan reflex in search of a justifying principle.” But it’s Will’s attack on Senate Republicans that lacks coherence: 1. Will purports to present five reasons that Senate Republicans have provided for their determination to keep the vacancy open until after the election. But his presentation of those supposed reasons isn’t at all fair. For starters, Will entirely omits what I understand to be the predominant reason: that filling the Scalia vacancy with an Obama pick would drive...