United States. Congress. House. Committee on Government Reform and Oversight. Subcommittee on Government Management, I. (1997). U.S. Border Patrol's implementation of "Operation Gatekeeper": Hearing before the Subcommittee on Government Management, Information, and Technology of the Committee on Government Reform and Oversight, House of Representatives, One Hundred Fourth Congress, second session, August 9, 1996. Washington: U.S. G.P.O. : For sale by the U.S. G.P.O., Supt. of Docs. Congressional Sales Office.

United States. Congress. House. Committee on Government Reform and Oversight. Subcommittee on Government Management, Information. U.S. Border Patrol's Implementation of "Operation Gatekeeper": Hearing Before the Subcommittee On Government Management, Information, and Technology of the Committee On Government Reform and Oversight, House of Representatives, One Hundred Fourth Congress, Second Session, August 9, 1996. Washington: U.S. G.P.O. : For sale by the U.S. G.P.O., Supt. of Docs. Congressional Sales Office, 1997.

United States. Congress. House. Committee on Government Reform and Oversight. Subcommittee on Government Management, Information. U.S. Border Patrol's Implementation of "Operation Gatekeeper": Hearing Before the Subcommittee On Government Management, Information, and Technology of the Committee On Government Reform and Oversight, House of Representatives, One Hundred Fourth Congress, Second Session, August 9, 1996. Washington: U.S. G.P.O. : For sale by the U.S. G.P.O., Supt. of Docs. Congressional Sales Office, 1997.