March 08, 1860
To the Senate of the United States:
I transmit herewith a report from the Secretary of State, together with the papers accompanying it, in answer to the resolution of the Senate in executive session of the 28th ultimo, calling for the instructions to our minister or ministers in Mexico which resulted in the negotiation of the treaty with that country now before the Senate.
JAMES BUCHANAN.
James Buchanan, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/203289