On the surface it all seemed like a gruesome hate crime in a rural part of Kentucky with a history of disdain for the government: a census worker found bound with duct tape and hanging from a tree, the word "fed" scrawled across his chest. But investigators noticed the foot-tall letters scrawled in black felt-tip pen looked like they could have been written by the victim himself, and they soon found out that he believed he had cancer, had two insurance policies worth $600,000, and had an adult son in need of money. Investigators said Tuesday what they had been hinting at for weeks, that Bill Sparkman's hanging was a ruse to mask his suicide for a big insurance payout. The key clue was the lack of defense wounds -- the only visible marks...