WASHINGTON -- Senate Finance Committee Chairman Max Baucus formally unveiled a 10-year $856 billion bill that would extend health insurance to tens of millions of Americans not now covered, moving an important step forward on President Barack Obama's top domestic priority. The sweeping measure is designed to steer a more moderate course on health policy than other major bills moving through Capitol Hill, and doesn't propose to create a new government insurance plan to compete with private insurers, as proposed in rival House legislation and favored by many liberals. Instead, the Montana Democrat is proposing to expand coverage by creating...