In our chapter on economic policy, we describe reconciliation, the process by which Congress changes laws in order to carry out the instructions of its annual budget resolution.  A reconciliation bill  is not subject to a Senate filibuster, so supporters of a comprehensive health bill are considering it as a vehicle to bypass Republican opposition.  
As Gail Russell Chaddock of the Christian Science Monitor reports, however, the dean of the Senate does not approve of such a maneuver:
On Feb. 23, Sen. Robert Byrd (D) of West Virginia, the leading in-house  defender of the Senate traditions, urged his colleagues to allow filibusters to  run their course and not change rules to block them.
“The Senate is the only place in government where the rights of a numerical  minority are so protected. Majorities change with elections. A minority can be  right, and minority views can certainly improve legislation,” he wrote in a  letter to his Senate colleagues.
“Extended deliberation and debate – when employed judiciously – protect every  senator, and the interests of their constituency, and are essential to the  protection of the liberties of a free people,” he added.