This would be amusing if it was not so pathetic.
At least the last time these states attempted to leave the Union, it was for a clear cause: Slavery. See also here. And if we think there were other causes, there were, but they related back to slavery, whether it was the tariff, the fear that the Republican administration of Lincoln would not expand slavery into territories or enforce the Fugitive Slave Act (which was a federal law that pre-empted or overruled state laws that protected runaway slaves), and even less important at the beginning of the Civil War, "State's rights."
This time, this petition movement is incoherent and based upon a delusion that Obama represents something fundamentally different than the previous six presidents.
One can just imagine how these people pushing this petition would have felt if Massachusetts citizens pushed such a petition after the November 1972 election where Massachusetts and the District of Columbia were the only places where McGovern beat Nixon. We'd have heard these people calling Massachusetts' citizens efforts in this regard an act of treason. This current and petulant exercise is one more example of the hypocrisy of the right wing in our nation, and the remnants of racism that still pollute our land.