ST. FRANCISVILLE, La., Sept. 7 -- The day before Hurricane Katrina made landfall, Sal and Mabel Mangano waffled, then decided against evacuating the mom-and-pop nursing home they owned. By morning, 35 of their frailest patients would be dead, drowned in their wheelchairs and beds by the storm surge. On Friday night, after four hours of deliberations, a jury acquitted the Manganos of negligent homicide, charges that could have put them in prison for life. The case raised broader questions about who, if anyone, deserves to be punished for the deaths in Katrina's deadly flooding............."