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Sen. Barbara Mikulski, D-Md., with her new buddy Sen. Mary Landrieu, D-La., during Senate Freshmen Orientation on Dec. 3, 1996. (Photo by Maureen Keating/CQ Roll Call via Getty Images)

Sen. Barbara Mikulski, D-Md., with her new buddy Sen. Mary Landrieu, D-La., during Senate Freshmen Orientation on Dec. 3, 1996. (Photo by Maureen Keating/CQ Roll Call via Getty Images)

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