George Washington, George Washington Papers, series 2, Letterbooks 1754–1799: Letterbook 25, April 6, 1789–March 4, 1791, Library of Congress, available at https://www.loc.gov/resource/mgw2.025/?sp=123&st=text or https://www.presidency.ucsb.edu/documents/first-annual-address-congress-0.
… The interests of the United States require that our intercourse with other nations should be facilitated by such provisions as will enable me to fulfill my duty in that respect in the manner which circumstances may render most conducive to the public good, and to this end that the compensation to be made to the persons who may be employed should, according to the nature of their appointments, be defined by law, and a competent fund designated for defraying the expenses incident to the conduct of foreign affairs….
