To the Senate of the United States:
In reply to the resolution of the Senate of the 7th instant, requesting the President to inform that body "whether he has any information that any citizen or citizens of the United States is or are now preparing or intending to prepare within the United States an expedition to revolutionize by force any part of the Republic of Mexico, or to assist in so doing, and, if he has, what is the extent of such preparation, and whether he has or is about to take any steps to arrest the same," I have to state that the Executive is not in possession of any information of the character called for by the resolution.
The late treaty of peace with Mexico has been and will be faithfully observed on our part.
JAMES K. POLK.
James K. Polk, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201719