Senate Democrats at odds over health care bill

Moderate Senate Democrats threatened Sunday to scuttle health-care legislation if their demands aren't met, while more liberal members warned their party leaders not to bend. The dispute among Democrats foretells of a rowdy floor debate next month on legislation that would extend health care coverage to roughly 31 million Americans. Republicans have already made clear they aren't supporting the bill. Final passage is in jeopardy, even after the chamber's historic 60-39 vote Saturday night to begin debate. "I don't want a big-government, Washington-run operation that would undermine the ... private insurance that 200 million Americans now have," said Sen. Ben Nelson, a conservative Nebraska Democrat. Nelson and three other moderates — Democratic Sens. Mary Landrieu of Louisiana and Blanche Lincoln of Arkansas and Connecticut independent Joe Lieberman — agreed to open debate despite expressing reservations on the measure. Each of them has warned that they might not support the final bill. One major sticking point is a provision that would allow Americans to buy a federal-run insurance plan if their state allows it. Moderates say they worry the so-called public option will become a huge and costly entitlement program and that other requirements in the bill could cripple businesses. "I don't want to fix the problems in our health care system in a way that creates more of an economic crisis," said Lieberman