To advise and consent to the ratification of the treaty of transits and commerce between the U.S., and the mexican republic dated at vera cruz dec. 14, 1859.

On May 31, 1860, the Senate voted 18–27. Result: failed. By party: Democrats 18–6, Republicans 0–21. It was a split vote: the parties took opposite sides, with some members crossing over. 6 members voted against their own party.

During the 36th Congress (1859–1860), James Buchanan was president, and Republicans held the House majority and Democrats the Senate majority.

Yes: 18
No: 27
Did not vote: 25
Date: May 31, 1860

By party

Democrats18 yes · 6 no · 17 didn’t vote
Republicans0 yes · 21 no · 6 didn’t vote

Who broke with their party

John Slidell D-LA voted no
James Alfred Pearce D-MD voted no
Albert Gallatin Brown D-MS voted no
William Bigler D-PA voted no
James Henry Hammond D-SC voted no
Robert Mercer Taliaferro Hunter D-VA voted no

How each senator voted: Yes

How each senator voted: No

Did not vote

Other votes

From Voteview roll call records.

Cite or embed this page

Capitol Receipts, “To advise and consent to the ratification of…: Senate Vote, May 31…,” https://www.capitolreceipts.com/vote/36-S-233/to-advise-and-consent-to-the-ratification-of-the (accessed 2026-10-17).