[GOPcapitalist]

The confederate tariff rates were at about the same level that the U.S. tariff had been when the south seceded.

That is because they adopted the pre-Morrill tariff schedule of 1857 with an average rate of about 15% - one of the lowest schedules that had ever been in place up until that time. They then lowered that schedule to an average rate of just over 13% in May 1861. Compare that to the yankee rate, which went up to 36% then over 45%.

[Non-Sequitur]

The southern senators could have defeated the Morill tariff in the Senate. They had done it before. They could have worked out a tariff compromise in the Senate. They had done it before. Instead, they seceded before the Morill tariff came up for a vote, and every compromise submitted by southern leaders - Davis, Toombs, Lechter, Hindman - all addressed the question of slavery and nothing else. If the Morill tariff was such a contentious issue then why weren't they interested in addressing that?