USA Today: His frontrunning Republican presidential candidacy on the line, Herman Cain returned to Arizona Tuesday to confront the explosive allegation of sexual misconduct leveled against him by a woman who says she had hoped to get a job from him. Saying "the Democratic machine in America has brought forth a troubled woman," Cain emphatically denied the charges leveled Monday by Sharon Bialek, who said Cain groped her during his 1990s tenure as president and chief executive officer of the National Restaurant Association, an industry organization.