It is a truism of political dynasties that there is a chosen heir - the one who should or would or could have been next. It is certainly apt of the Bush family. Jeb Bush is the son who was groomed for the presidency. He was the one most Republicans expected to succeed his father into the Oval Office. And today, looking at their, let's be frank, lacklustre field, many Republicans still wish he would do just that. "It's very flattering to be asked that regularly," Jeb tells me in his office at the Coral Gables Biltmore Hotel. "I don't...