COMING: The 2013 Tax Cliff. “What this means is that millions of small-business owners had better enjoy the next 16 months, because come January 2013 they are going to get hit with a giant tax bill. . . . For the White House, the policy calendar is dictated above all by the political necessities of the 2012 election. Mr. Obama will take his chances on 2013 if he can cajole the private economy to create enough new jobs over the next year to win re-election, even if those jobs and growth are temporary. Business owners and workers who would prefer to prosper beyond Election Day aren’t likely to share Mr. Obama’s enthusiasm once they see the great tax cliff approaching.”