Do good intentions = good public policy? Signs point to no. Too often, programs sold to the public as key to supporting vulnerable or disadvantaged groups end up enriching fraudsters instead. The answer? Punishment under the law, of course, but also sturdy guardrails , installed by policymakers, to prevent this fraud from recurring ad nauseam. The California Post reported this week that Sheryl Davis, a former top San Francisco official, faces 17 felony charges for alleged personal use of