Mitt Romney has been taking some heat in the past few days for daring to question whether London was fully prepared for the 2012 Olympics. The candidate, who was chief executive of the Winter Olympics in Salt Lake City in 2002, is due to attend the opening ceremony on Friday before he continues his foreign tour. Speaking to NBC News, he said: "It's hard to know just how well it will turn out. There are a few things that were disconcerting: the stories about the private security firm not having enough people, supposed strike of the immigration and customs officials,...