During the War of 1812, northerners, who tended to be Federalists, opposed the war. They saw it as only beneficial to the southern states. To them, they believed the South was becoming too powerful. Their largest beef was the 3/4th Compromise that allowed three of every four slaves to be counted as population for elections. The southern strength was becoming obvious with three of the four Presidents all coming from Virginia. Many northern delegates gathered at Hartford, CT to ask for Constitutional changes. They even threatened possible secession if their demands were not met. So, in fact the North talked secession just as much as the south, the only difference from 1815 to 1860 was which section of the nation was holding the power.
Historically Speaking 