Massachusetts Gov. Mitt Romney re-ignited that debate last month when he announced a plan to expand health coverage to all the state's residents, with a caveat that those who don't buy coverage could face a penalty.
"We can't have as a nation 40 million people — or, in my state, half a million — saying, 'I don't have insurance, and if I get sick, I want someone else to pay,' " says Romney, a Republican who says he might run for president in 2008.
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"It's a conservative idea," says Romney, "insisting that individuals have responsibility for their own health care. I think it appeals to people on both sides of the aisle: insurance for everyone without a tax increase