WASHINGTON -- In the health care debate, Democrats and their allies have gone after insurance companies as rapacious profiteers making "immoral" and "obscene" returns while "the bodies pile up."But in pillorying insurers over profits, the critics are on shaky ground. Ledgers tell a different reality.Health insurance profit margins typically run about 6 percent, give or take a point or two. That's anemic compared with other forms of insurance and a broad array of industries, even some beleaguered ones.Profits barely exceeded 2 percent of revenues in the latest annual measure. This partly explains why the credit ratings of some of the...