Jonathan Cohn explains one problem with McCain's healthcare plan:
More than 30 states already have programs almost exactly like the one McCain just sketched out. They are called "high risk pools," and the idea is pretty straightforward: Private insurers agree to sell policies directly to individuals, even those with pre-existing medical conditions, as long as the state helps to subsidize the cost.
But the whole reason conservatives like McCain prefer this approach to liberal schemes for universal coverage is that it involves minimal government regulation. As a result, private insurers have enormous leeway in dictating the terms of coverage. And one place they use that leeway is by setting high prices.
A few years ago, a Commonwealth Fund study found that, on average, state high-risk pools offered coverage that was two-thirds more expensive than regularly priced coverage. In some states, the high-risk coverage was actually twice as high as regular coverage.
At those prices, you might think the coverage was spectacular. Not so. While private insurers in high-risk pools are willing to accept people with pre-existing conditions, they're not generally willing to cover expenses related to those pre-existing conditions--at least not right away. Nearly all the plans surveyed had waiting periods of between six months and a year, during which the insurers would not cover care for prior medical problems.
More here.