May 28, 1864
To the Senate of the United States:
In reply to a resolution of the Senate of the 25th instant, relating to Mexican affairs, I transmit a partial report from the Secretary of State of this date, with the papers therein mentioned.
ABRAHAM LINCOLN.
Abraham Lincoln, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202284