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WASHINGTON, DC - MARCH 12: (R-L) Federal Bureau of Investigation Director James Comey, U.S. Marshals Service Director Stacia Hylton, Drug Enforcement Administration Administrator Michelle Leonhart and Bureau of Alcohol, Tobacco, Firearms and Explosives Director Todd Jones testify before the Senate Appropriations Committee's Commerce, Justice, Science and Related Agencies Subcommittee about their agencies' FY2016 budgets in the Dirksen Senate Office Building on Capitol Hill March 12, 2015 in Washington, DC. The heads of the agencies, all part of the Department of Justice, testified about funding requests and budget justifications. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - MARCH 12:  (R-L) Federal Bureau of Investigation Director James Comey, U.S. Marshals Service Director Stacia Hylton, Drug Enforcement Administration Administrator Michelle Leonhart and Bureau of Alcohol, Tobacco, Firearms and Explosives Director Todd Jones testify before the Senate Appropriations Committee's Commerce, Justice, Science and Related Agencies Subcommittee about their agencies' FY2016 budgets in the Dirksen Senate Office Building on Capitol Hill March 12, 2015 in Washington, DC. The heads of the agencies, all part of the Department of Justice, testified about funding requests and budget justifications.  (Photo by Chip Somodevilla/Getty Images)