U.S. Sen. Charles Grassley (R-IA) has warned the Justice Department not to punish insiders who talk to Congress about the "Fast and Furious" operation. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

Ryan Cook reaches for a jar of medical marijuana at one of his clinics in Denver on June 24. Ed Andrieski/AP hide caption

itoggle caption Ed Andrieski/AP

An October 2010 photo reviewed by U.S. military officials shows Camp VI entrance at Guantanamo, where 70 prisoners were detained. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

In 1985, Chris Turner was convicted of the murder of Catherine Fuller. After spending decades in prison, Turner is now out on parole; he maintains his innocence. He is shown here in his childhood neighborhood in Northeast Washington, D.C., about 100 yards away from what was Fuller's home. Amanda Steen/NPR hide caption

itoggle caption Amanda Steen/NPR

Dominique Strauss-Kahn's lawyers Benjamin Brafman (front) and William Taylor address the media after a hearing at New York State Supreme Court on Friday. David Karp/AP hide caption

itoggle caption David Karp/AP

Dominique Strauss-Kahn, the former head of the International Monetary Fund, and his wife, Anne Sinclair, leave a Manhattan court on June 6. Timothy A. Clary/AFP/Getty Images hide caption

itoggle caption Timothy A. Clary/AFP/Getty Images

Harold Koh (left), the top lawyer at the U.S. State Department, stands with Assistant Secretary of State Michael Posner during a news conference after the United States' first review before the U.N. Human Rights Council last November. Fabrice Coffrini/AFP/Getty Images hide caption

itoggle caption Fabrice Coffrini/AFP/Getty Images

Rep. Darrell Issa and other Republicans in Congress are headed to Mexico on Friday to try to find more weapons purchased by straw buyers in the U.S. Harry Hamburg/AP hide caption

itoggle caption Harry Hamburg/AP

Senate Minority Leader Mitch McConnell wants two suspected terrorists to be imprisoned at Guantanamo Bay instead of in his home state of Kentucky. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Demonstrators march in the National Day of Protest to Stop Police Brutality, in Los Angeles in 2009. David McNew/Getty Images hide caption

itoggle caption David McNew/Getty Images

John Edwards faces the court and the media after his indictment. Chuck Burton/AP hide caption

itoggle caption Chuck Burton/AP

Iraqi refugees Waad Alwan (left) and Mohanad Hammadi (right) were arrested May 25 in Kentucky for allegedly conspiring to aid al-Qaida. If convicted on all charges, each could face life in prison. U.S. Marshals Service/AFP/Getty Images hide caption

itoggle caption U.S. Marshals Service/AFP/Getty Images