The Obama campaign is out with a new two-minute attack ad, hitting Mitt Romney on his past at Bain Capital. The ad, set to run in Pennsylvania, Iowa, Ohio, Virginia and Colorado, plays up the “vulture capitalism” angle. “It was like a vampire,” says a former GS Steel worker named Joe Cobb. “They came in and sucked the life out of us.” The Romney campaign is expected to push back aggressively on what they view as a major distraction from the president’s disastrous economic record. It shouldn’t be terribly hard. The bankruptcy and layoffs occurred in 2001, two years after...