“One of the last and worst acts of a Congress which, born in bitterness and nurtured in convulsion…was the passage of an obscure, ill-considered, ill-digested, and unstatesmanlike high protective tariff act, commonly known as “THE MORRILL TARIFF.”…And sir, when once this policy was begun, these self-same motives of waning commerce, and threatened loss of trade, impelled the great city of New York, and her merchants and her politicians and her press—with here and there an honorable exception—to place herself in the very front rank among the worshippers of Moloch…These, sir, were the chief causes which, along with others…forced us, headlong, into civil war, with all its accumulated horrors.”
"Clement Vallandigham, an Ohio Congressman who was eventually arrested and deported from the United States because of his speeches in opposition to the policies of the Lincoln administration, gave a speech in the U.S. House of Representatives on July 10, 1861, stating that the Morrill Tariff was the principal cause of Lincoln’s decision to go to war against the seceding Southern states"
Legally, yes.