To amend the Senate resolution relating to the treaty of transits and commerce between the U.S., and mexico made at vera cruz, dec. 14, 1859, by adding a provis

On May 31, 1860, the Senate voted 22–20. Result: passed. By party: Democrats 22–0, Republicans 0–20. It was a party-line vote: most Democrats and most Republicans voted on opposite sides.

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

Yes: 22
No: 20
Did not vote: 28
Date: May 31, 1860

By party

Democrats22 yes · 0 no · 19 didn’t vote
Republicans0 yes · 20 no · 7 didn’t vote

Who broke with their party

Every member who voted sided with their party's majority.

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 amend the Senate resolution relating to…: Senate Vote, May 31, 1860,” https://www.capitolreceipts.com/vote/36-S-232/to-amend-the-senate-resolution-relating-to-the-treaty (accessed 2026-10-17).