    If the Obama White House decides that reorganizing the 17.1%
of the economy that the U.S. is likely to spend on health care
in 2010 is a first-year priority, then Mr. Baucus's bill will be
the place they start. Americans need to learn what they'd be
paying for.  First, Democrats want the government to create a
national insurance exchange, or marketplace, in which all comers
could buy into a range of heavily regulated private policies at
group rates. These private plans would then "compete" with a new
public insurance option, i.e., a program managed by the
government and modeled after Medicare. Lower-income earners
would get subsidies to make coverage "affordable." Businesses
that didn't cover their employees would pay a tax on some
portion of their payroll.  The last cog is the "individual
mandate." This requirement that everyone buy coverage has
grabbed most media scrutiny of the Baucus plan, because Mr.
Obama opposed it during the campaign. But the many moving parts
don't work together unless the young