Attorney General Eric Holder listens at right as Environmental Protection Agency Administrator Gina McCarthy speaks during a news conference at the Justice Department in Washington on Monday. Evan Vucci/AP hide caption

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Protesters gather outside the Albuquerque Police Department following the shooting deaths of James Boyd and others on March 25. The Justice Department accused the police of engaging in a pattern of excessive force. Rita Daniels /NPR hide caption

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New York City police officers stand guard in Times Square earlier this month after a blog affiliated with the so-called Islamic State militants mentioned the area as a target for bombing. Andrew Burton/Getty Images hide caption

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In the past year, the U.S. prison population fell by roughly 4,800, the first time in decades the number has gone down, according to the Justice Department. Attorney General Eric Holder discussed the findings in New York on Tuesday. Julio Cortez/AP hide caption

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Associate Attorney General Tony West, at podium, speaks at the Justice Department in Washington on Aug. 21. West is preparing to announce he is leaving government for a job in the private sector. Lauren Victoria Burke/AP hide caption

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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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