Congress, shown gathered for President Obama's State of the Union in January, is speaking at about a grade level lower now than in 2005, according to the Sunlight Foundation. Mandel Ngan/AFP/Getty Images hide caption

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Sen. Dick Lugar, R-Ind., crosses the finish line of the 3-mile Capital Challenge charity race with Olympic marathoner Meb Keflezighi. It was Lugar's 31st race, and his last as a senator after he lost a primary challenge this month. Javaun Moradi/NPR hide caption

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The U.S. and JPMorgan Chase flags wave outside its headquarters in New York on Friday. Eduardo Munoz/Reuters /Landov hide caption

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Republican presidential candidate Mitt Romney arrives for a town hall-style meeting at Stamco Industries, a truck parts supplier, in Euclid, Ohio, on Monday. Jae C. Hong/AP hide caption

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Republican Sen. Richard Lugar (right) and state Treasurer Richard Mourdock participate in an April 11 debate in Indianapolis. Darron Cummings/AP hide caption

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U.S. Sen. Richard Lugar, R-Ind., speaks to reporters on Monday in South Bend, Ind. James Brosher/AP hide caption

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Sen. Richard Lugar, R-Ind., speaks to reporters Monday in South Bend, Ind. Lugar, a 36-year veteran of the Senate, is engulfed in a primary battle with Indiana State Treasurer Richard Mourdock, a Tea Party favorite. James Brosher/AP hide caption

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