[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/POLITICS/07/12/health.care/art.capitollight.gi.jpg caption="The Senate has witnessed divisive debates over the course of history."]Washington (CNN) - The Senate is about to embark on what could be the showdown of the year as top Democrats work to push through sweeping health care legislation.
The legislative chamber, however, is no stranger to history-changing debate. Lawmakers need to look no further than their predecessors to see how it's done.
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