To the Senate and House of Representatives:
I transmit to Congress a copy of the treaty between the United States and the Kingdom of Siam, concluded on the 29th of May, 1856, and proclaimed on the 16th of August last, and call the attention of that body to the necessity of an act for carrying into effect the provisions of Article II of the said treaty, conferring certain judicial powers upon the consul of the United States who may be appointed to reside at Bangkok. I would also suggest that the extension to the Kingdom of Siam of the provisions of the act approved August 11, 1848, entitled "An act to carry into effect certain provisions in the treaties between the United States and China and the Ottoman Porte, giving certain judicial powers to ministers and consuls of the United States in those countries," might obviate the necessity of any other legislation upon the subject.
JAMES BUCHANAN.
James Buchanan, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202837