FILE - In this June 16, 2012 file photo, former President George W. Bush smiles as he takes in a baseball game in Arlington, Texas. The Rangers won 8-3. Sarah Palin and George W. Bush won't be in Tampa. Hillary Rodham Clinton and Al Gore aren't making the trip to Charlotte. And scores of other Republican and Democratic stars are taking a pass as their parties gather at every-four-years national conventions. The reasons are varied _ and political.  (AP Photo/LM Otero, File)
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