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By Gloria Borger, CNN Chief Political Analyst
Editor's note: Gloria Borger is CNN's chief political analyst, appearing regularly on shows such as "AC360Ë" "The Situation Room," "John King, USA" and "State of the Union."
(CNN) - There are plenty of ways to game the upcoming Supreme Court decision on health care reform, and they've all been said: President Obama loses in court, he wins with his base. Or it's a severe blow, potentially fatal. Or Republicans benefit if they win, because they were "right" all along. Or the GOP loses, because it has to figure out what to offer for health care instead.
And so it goes.
But there's something else going on here, and it's more meaningful than some short-term political skirmishing. This Supreme Court case is the Waterloo for political polarization, because it underscores something we should have known all along: Great changes in national public policy should never be erected on slender partisan majorities.