It is a historic vote--never before has the chamber passed such sweeping health care legislation--but not the historic vote that would send the bill to President Obama for his signature. The Senate must still vote on its own version of health care reform. If that passes, the two chambers would have to sort out their differences, producing a final bill to be voted on. That whole process could take months. In the coming weeks, a crucial debate surrounds health care reform: Will the process resemble that of the economic stimulus bill, a $787 billion measure passed in February with no...