I think I know who Paul Krugman is talking about.
The real risk is that health care reform will be undermined by “centrist” Democratic senators who either prevent the passage of a bill or insist on watering down key elements of reform. I use scare quotes around “centrist,” by the way, because if the center means the position held by most Americans, the self-proclaimed centrists are in fact way out in right field.
What the balking Democrats seem most determined to do is to kill the public option, either by eliminating it or by carrying out a bait-and-switch, replacing a true public option with something meaningless. For the record, neither regional health cooperatives nor state-level public plans, both of which have been proposed as alternatives, would have the financial stability and bargaining power needed to bring down health care costs.
Fun fact from Krugman: Yes, universal health care has a cost. But it’s less than the cost of George W. Bush’s tax cuts.