U.S. Attorney General Eric Holder, shown speaking at the Congressional Black Caucus legislative conference on Friday, will be stepping down from his position as soon as a replacement is appointed. T.J. Kirkpatrick/Getty Images hide caption

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Attorney General Eric Holder speaks during a Sept. 4 news conference at the Justice Department in Washington. Pablo Martinez Monsivais/AP 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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A memorial sits at the site of Michael Brown's death in Ferguson, Mo. Any investigation into his shooting by a police officer is likely to take months. Larry W. Smith/EPA/Landov hide caption

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Attorney General Eric Holder testifies before the House Judiciary Committee on the oversight of the U.S. Department of Justice on Capitol Hill in Washington, Tuesday. Manuel Balce Ceneta/AP hide caption

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John Lewis (left) and Stuart Gaffney embrace outside San Francisco's City Hall shortly before the U.S. Supreme Court ruling cleared the way for same-sex marriage in California in June. Noah Berger/AP hide caption

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Despite a Supreme Court ruling that gutted a key part of the Voting Rights Act, Attorney General Eric Holder wants a court to use another section of the 1965 law to require Texas to get the federal government's approval before changing its voting laws. Matt Rourke/AP hide caption

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