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Rep. Joe Barton. sponsored a drug testing opportunity at Rayburn House Office Building in the First aid room. Here, Rep. Dan Burton heads to the bathroom with his sample bottle. When he finished and exited the bathroom he said "It was a success". In background are two staff members, Brian Margulies and Michael Harrington from Rep. Clan Shaw's office on Nov. 19, 1991. (Photo by Maureen Keating/CQ Roll Call via Getty Images)

Rep. Joe Barton. sponsored a drug testing opportunity at Rayburn House Office Building in the First aid room. Here, Rep. Dan Burton heads to the bathroom with his sample bottle. When he finished and exited the bathroom he said "It was a success". In background are two staff members, Brian Margulies and Michael Harrington from Rep. Clan Shaw's office on Nov. 19, 1991. (Photo by Maureen Keating/CQ Roll Call via Getty Images)

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