Mitt Romney appeared strangely agitated in his interview with Fox News host Bret Baier on Tuesday. Romney had won praise earlier in the campaign for his calmness. But the calmness has given way under campaign pressures to open irritation. He testily brushed off Baier's blameless questions as "unusual." Baier isn't exactly Martin Bashir, yet Romney felt the need to treat him like a particularly hostile questioner. Romney hasn't been this agitated since he grabbed at Rick Perry's shoulder. Behaving like a thin-skinned pol didn't lend any credence to Romney's claim during the interview that he is the refreshing outsider in...