New Jersey Democrat Robert Menendez, chairman of the Senate Foreign Relations Committee, has asked the Justice Department to investigate a smear campaign against him. Alex Wong/Getty Images hide caption

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A photo provided by the U.S. Marshal's office shows terrorism suspect Adel Daoud, of Hillside, Ill. Daoud, a 20-year-old U.S citizen, has denied government allegations that he accepted a phony car bomb from undercover FBI agents in 2012, parked it by a Chicago bar and pressed a trigger. Uncredited/AP hide caption

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Press materials are displayed on a table at the Justice Department in Washington on Monday before Attorney General Eric Holder was to speak at a news conference. Charles Dharapak/AP hide caption

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Debo Adegbile, special counsel of the NAACP Legal Defense Fund, speaks with the media outside the Supreme Court in Feb. 2013 after presenting arguments in the Shelby County, Ala., v. Holder voting rights case. Evan Vucci/AP hide caption

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