FILE - In this April 16, 2012, file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney addresses supporters at a Tax Day Tea Summit held at Franklin Institute in Philadelphia. Under his own tax proposal, Romney would pay half what he would pay in taxes under President Barack Obama's plan. For a man of Romney's means, that could save almost $5 million a year.  (AP Photo/Jae C. Hong, File)
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