The Obamas' summer break in Martha's Vineyard has already been branded a PR disaster after the couple arrived four hours apart on separate government jets. But according to new reports, this is the least of their extravagances. White House sources today claimed that the First Lady has spent $10million of U.S. taxpayers' money on vacations alone in the past year. Branding her 'disgusting' and 'a vacation junkie', they say the 47-year-old mother-of-two has been indulging in five-star hotels, where she splashes out on expensive massages and alcohol. The 'top source' told the National Enquirer: 'It's disgusting. Michelle is taking advantage...