Sen. Jeanne Shaheen (D-N.H.) in the U.S. Capitol building May 14, 2013. Groups are creating ads in New Hampshire to attack Shaheen 10 months before the midterm congressional elections. Allison Shelley/Getty Images hide caption

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The Texas chapter of the conservative advocacy group Americans for Prosperity held an event Wednesday called "All I Want for Christmas is Less Federal Spending." Alan Greenblatt/NPR hide caption

itoggle caption Alan Greenblatt/NPR

David Koch, executive vice president of Koch Industries, attends an event at The Economic Club of New York last year. Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP