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Public plan mirage
In the health-care debate, the "public plan" is all things to all people. For supporters, it would discipline greedy private insurers and make health-care coverage affordable. For detractors, it's a way station on the path to a single-payer insurance system of government-run health care. In reality, the public plan, also known as the public option, is mostly an exercise in political avoidance: It pretends to control costs and improve access to quality care when it doesn't. ...

...As for administrative expenses, any advantage for the public plan is exaggerated, say critics. Part of the gap between private insurers and Medicare is statistical illusion: Because Medicare recipients have higher average health expenses ($10,003 in 2007) than the under-65 population ($3,946), its administrative costs are a smaller share of total spending. The public plan, with younger members, wouldn't enjoy this advantage.

Likewise, Medicare has low marketing costs because it's a monopoly. But a non-monopoly public plan would have to sell itself and would incur higher marketing costs. Private insurers' profits (included in administrative costs) also explain some of Medicare's cost advantage. But profits represent only 3 percent of the insurance industry's revenue. Moreover, accounting comparisons are misleading when they don't include the cost of Medicare's government-supplied investment capital. A public plan would also need investment capital. And suppose the public plan suffers losses. Congress would assuredly bail it out.

The promise of the public plan is a mirage. Its political brilliance is to use free-market rhetoric (more "choice" and "competition") to expand government power. But why would a plan tied to Medicare control health spending, when Medicare hasn't? From 1970 to 2007, Medicare spending per beneficiary rose 9.2 percent annually compared to the 10.4 percent of private insurers -- and the small difference partly reflects cost shifting. Congress periodically improves Medicare benefits, and there's a limit to how much squeezing reimbursement rates can check costs. Doctors and hospitals already complain that low payments limit services or discourage physicians from taking Medicare patients. ...

...Many would say: Whoopee! Get rid of the sinister insurers. Bring on a single-payer system. But if that's the agenda, why not debate it directly?...