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Mitt Romney

Associated Press
FILE - In this April 10, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney in Mendenhall, Pa. Florida Sen. Marco Rubio's push for a Republican version of immigration legislation could be the answer to GOP election-year prayers. The telegenic son of Cuban exiles and potential vice presidential pick is putting together a bill that would allow young illegal immigrants to study and work in the United States but still deny them citizenship.  (AP Photo/Alex Brandon, File)

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Highlights from Republican presidential nominee Mitt Romney's 2012 campaign trail.

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