Kennedy clan backs Barack Obama over Hillary Clinton By Toby Harnden in Columbia, South Carolina Last Updated: 2:14am GMT 28/01/2008 The Kennedy clan is to throw its weight behind Barack Obama's bid for the presidency following his victory in the South Carolina primary. The endorsements by John F Kennedy's daughter Caroline and brother Senator Ted Kennedy were a blow to Hillary Clinton, who suffered a 28-point humiliation in the Southern state. Caroline Kennedy has made public her support for Barack Obama Mrs Clinton had sought to get the Democratic establishment behind her bid to become America's first female president. But...