“At what point do we decide that a political system has become decadent?”

EJ Dionne takes the Weiner "scandal" as the moment he realized we were late imperial Rome. PM Carpenter takes the Bush vs Gore Supreme Court ruling. Personally, I think it was some moment between the Congress's assent to torture in 2006 and when Sarah Palin was selected as a serious vice-presidential nominee in 2008.

Any thoughts?