Shadow of 9/11 towers over the US election

Shadow of 9/11 towers over the US election The US has not left the Bush era behind. The election offers a choice but reflects a weak appetite to talk about other challenges, writes Edward Luce
http://link.ft.com/r/J0VG55/MJQVRS/40OA1R/JECLV0/1O0PHA/9A/h?a1=2012&a2=10&a3=22