Speaker Nancy Pelosi has reportedly told fellow Democrats that she's prepared to lose seats in 2010 if that's what it takes to pass ObamaCare, and little wonder. The health bill she unwrapped last Thursday, which President Obama hailed as a "critical milestone," may well be the worst piece of post-New Deal legislation ever introduced.

In a rational political world, this 1,990-page runaway train would have been derailed months ago. With spending and debt already at record peacetime levels, the bill creates a new and probably unrepealable middle-class entitlement that is designed to expand over time. Taxes will need to rise precipitously, even as ObamaCare so dramatically expands government control of health care that eventually all medicine will be rationed via politics.

Yet at this point, Democrats have dumped any pretense of genuine bipartisan "reform" and moved into the realm of pure power politics as they race against the unpopularity of their own agenda. The goal is to ram through whatever income-redistribution scheme they can claim to be "universal coverage." The result will be destructive on every level--for the health-care system, for the country's fiscal condition, and ultimately for American freedom and prosperity...

...All of this is intentional, even if it isn't explicitly acknowledged. The overriding liberal ambition is to finish the work began decades ago as the Great Society of converting health care into a government responsibility. Mr. Obama's own Medicare actuaries estimate that the federal share of U.S. health dollars will quickly climb beyond 60% from 46% today. One reason Mrs. Pelosi has fought so ferociously against her own Blue Dog colleagues to include at least a scaled-back "public option" entitlement program is so that the architecture is in place for future Congresses to expand this share even further.

As Congress's balance sheet drowns in trillions of dollars in new obligations, the political system will have no choice but to start making cost-minded decisions about which treatments patients are allowed to receive. Democrats can't regulate their way out of the reality that we live in a world of finite resources and infinite wants. Once health care is nationalized, or mostly nationalized, medical rationing is inevitable--especially for the innovative high-cost technologies and drugs that are the future of medicine.

Mr. Obama rode into office on a wave of "change," but we doubt most voters realized that the change Democrats had in mind was making health care even more expensive and rigid than the status quo. Critics will say we are exaggerating, but we believe it is no stretch to say that Mrs. Pelosi's handiwork ranks with the Smoot-Hawley tariff and FDR's National Industrial Recovery Act as among the worst bills Congress has ever seriously contemplated.