To the House of Representatives:
In compliance with the resolution of the House of Representatives of the 17th July last, requesting me to communicate all information received at the several Departments of the Government touching the organization within or near the territory of the United States of armed bodies of men for the purpose of avenging the death of the Archduke Maximilian or of intervening in Mexican affairs, and what measures have been taken to prevent the organization or departure of such organized bodies for the purpose of carrying out such objects, I transmit a report from the Secretary of State and the papers accompanying it.
ANDREW JOHNSON.
Andrew Johnson, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201998