December 19, 1859
To the Senate of the United States:
I transmit to the Senate, with a view to ratification, a treaty of friendship, commerce, and navigation concluded at Asuncion on the 4th of February last between the plenipotentiaries of the United States and Paraguay.
JAMES BUCHANAN.
James Buchanan, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/203137