So you cant claim that Southerners paid for the vast bulk of trariffs then. Just as I thought.
The Morrill Tariff had already been voted down in 1860. The Democrats still held the Senate in 1861. Its really irrelevant to any claims to secession.
Of course I can because they did. This was not in dispute. Read what everybody at the time said about it.
The Morrill tariff had already passed the House in 1860. It was initially rejected in the Senate but the vote was close. It was clear with a little effort it was going to pass. Tariffs were one of the really key issues that lead the Southern states to secede.
The February 1961 Senate vote was 25 to 14. By that time seven southern states had withdrawn their Senators from Congress. With those 14 anti-tarrif votes the bill would have failed 28-25. It was clear it was never going to pass as written.