I like the thrust of his market-driven approach, but by allowing insurance companies to deny people insurance for pre-existing conditions, and undermining the employer-based insurance system, the risk to people already dealing with medical issues is enormous. I'd love to be able to buy my own health insurance and keep it from job to job. But I'm HIV-positive and no one would sell it to me. And McCain's plan would leave people like me stranded. Yes, he says he'd work with the states on subsidizing this ... but is that really reassurance? Megan has more here.