An email conversation between a top Hillary Clinton aide and a Clinton Foundation executive suggests the private server that Clinton and her staff used to communicate may have malfunctioned at least once during her tenure. Huma Abedin, Clinton's then-deputy chief of staff, complained that her private email was "down" the evening of Oct. 9 and into Oct. 10, 2012, according to an email chain obtained by Citizens United through the Freedom of Information Act. The crash described by Abedin took place just weeks after the terror attack in Benghazi. Critics have said the homebrew server, which may have even resided...