To the Senate of the United States:
I lay before the Senate a dispatch which has just been received from Mr. Corwin, our minister to Mexico. It communicates important information concerning the war which is waged against Mexico by the combined powers of Spain, France, and Great Britain.
Mr. Corwin asks instructions by which to regulate his proceedings so as to save our national interests in the case of an adjustment of the difficulties between the belligerents. I have heretofore submitted to the Senate a request for its advice upon the question pending by treaty for making a loan to Mexico, which Mr. Corwin thinks will in any case be expedient. It seems to be my duty now to solicit an early action of the Senate upon the subject, to the end that I may cause such instructions to be given to Mr. Corvin as will enable him to act in the manner which, while it will most carefully guard the interests of our country, will at the same time be most beneficial to Mexico.
Abraham Lincoln, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/203101