Obama campaign says rival’s camp has gone into ‘meltdown’ after John Sununu suggests president is un-American Mitt Romney’s campaign suffered another setback on Tuesday when a senior member of his team, John Sununu, was forced to apologise for suggesting president Barack Obama is un-American.? “Frankly, I made a mistake. I shouldn’t have used those words. And I apologise for using those words,” Sununu said. Hours earlier Sununu had resurrected questions about the president’s American credentials on Tuesday and attempted to link him to political corruption in his home city of Chicago. Sununu’s comments marked a further deterioration in the level of exchanges between the two campaigns.