April 14, 2005
Robert J. Portman, of Ohio, to be United States Trade Representative, with the Rank of Ambassador Extraordinary And Plenipotentiary, Vice Robert B. Zoellick, Resigned.
George W. Bush, Nomination Sent to the Senate Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/282259