Darrel Issa Darrel Issa

Representative Darrell Issa, R-Calif., became the 31st Republican to announce he is not seeking re-election in this year's midterms. Bloomberg/Bloomberg via Getty Images hide caption

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Bloomberg/Bloomberg via Getty Images

Internal Revenue Service Director of Exempt Organizations Lois Lerner as she was sworn in at a hearing held Wednesday by the House Committee On Oversight & Government Reform. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images