Eric H. Holder Jr.

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Attorney General Eric H. Holder Jr. was deputy attorney general when President Bill Clinton (shown here) pardoned fugitive financier Marc Rich, but Mr. Holder's depiction of his involvement has been questioned. (Associated Press)

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Attorney General Eric H. Holder Jr. was deputy attorney general when President Bill Clinton pardoned fugitive financier Marc Rich (shown here), but Mr. Holder's depiction of his involvement has been questioned. (Associated Press)

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Attorney General Eric H. Holder Jr. (left), accompanied by FBI Director Robert S. Mueller III, announces on Tuesday, Oct. 11, 2011, in Washington that two men have been charged in an alleged plot directed by elements of the Iranian government to murder the Saudi ambassador to the United States. (AP Photo/Haraz N. Ghanbari)

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Sen. John Cornyn, Texas Republican, has sent a letter to Attorney General Eric H. Holder Jr. demanding answers about the Fast and Furious gun operation. (Associated Press)

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Attorney General Eric H. Holder Jr. is seen on multiple television screens, at Justice Department on Wednesday during a news conference to discuss results of the U.S. prosecution of an international criminal network organized to sexually exploit children. (Associated Press)

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Attorney General Eric H. Holder Jr. greets Homeland Security Secretary Janet Napolitano on Monday during for the announcement of the Strategy to Combat Transnational Organized Crime. (Associated Press)

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Sen. Patrick J. Leahy (center), Vermont Democrat, and Sen. Charles E. Grassley (left), Iowa Republican, welcome Attorney General Eric H. Holder Jr. on Capitol Hill in Washington on Wednesday, May 4, 2011, before Mr. Holder testifies before the Senate Judiciary Committee. (AP Photo/J. Scott Applewhite)

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Attorney General Eric H. Holder Jr. testifies on Capitol Hill in Washington on Tuesday, May 3, 2011, at a House Judiciary Committee oversight hearing. (AP Photo/Evan Vucci)

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WARNING: Attorney General Eric H. Holder Jr. told a House panel Tuesday he was prepared to sue the state of Utah over its immigrant guest-worker law. (Associated Press)

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Attorney General Eric H. Holder Jr., at a House Judiciary Committee on Tuesday, said he has read the Utah immigration law — unlike Arizona's, where he first criticized the law, only later acknowledging he hadn't read it. (Associated Press)

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Attorney General Eric H. Holder Jr. calls human trafficking “an affront to human dignity” and said it's occurring in “virtually every corner of our nation.” (Associated Press)

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TURNABOUT: Attorney General Eric H. Holder Jr. blamed hindrances by members of Congress. (Associated Press)

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Attorney General Eric H. Holder Jr. has offered to work with Congress on a law that would let law enforcement delay constitutional Miranda warnings to terror suspects. (Associated Press)

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Attorney General Eric H. Holder Jr. listens as Health and Human Services Secretary Kathleen Sebelius speaks Thursday at a Washington news conference. They detailed the Thursday actions of the Medicare Fraud Strike Force. (Associated Press)

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Attorney General Eric H. Holder Jr. (right) and Preet Bharara, U.S. attorney for New York's Southern District. (Associated Press File)

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U.S. Attorney General Eric H. Holder Jr., center, surrounded by federal and local law officials, announces organized crime arrests Thursday, Jan. 20, 2011 in New York. More than 120 organized crime associates were arrested Thursday on charges including murder, extortion and narcotics trafficking in one of the largest Mafia crackdowns in FBI history. (AP Photo/Bebeto Matthews)