ZURICH  Like every other country in Europe, Switzerland guarantees health care for all its citizens. But the system here does not remotely resemble the model of bureaucratic, socialized medicine often cited by opponents of universal coverage in the United States.

Swiss private insurers are required to offer coverage to all citizens, regardless of age or medical history. And those people, in turn, are obligated to buy health insurance.

That is why many academics who have studied the Swiss health care system have pointed to this Alpine nation of about 7.5 million as a model that delivers much of what Washington is aiming to accomplish  without the contentious option of a government-run health insurance plan.

In Congress, the Senate Finance Committee is dealing with legislation proposed by its chairman, Max Baucus, Democrat of Montana, which would require nearly all Americans to buy health insurance, but stops short of the government-run insurance option that is still strongly supported by liberal Democrats.