Two of his Republican rivals on Thursday criticized Rick Perry, who has dropped hints he may skip some of the upcoming presidential debates. In a question-and answer-session with reporters following an education forum in New York City, former Sen. Rick Santorum and former House Speaker Newt Gingrich both suggested it is a sign of weakness for Perry to take a pass on some future debates. At least 10 have been scheduled between now and the end of January. "I'd never skip a debate. I'd never skip the opportunity to let the American public know what I think about these issues,"...