Why did President Lincoln's argument that secession was not constitutional

Explanation:

The secessionists claimed that according to the Constitution every state had the right to leave the Union. Lincoln claimed that they did not have that right. He opposed secession for these reasons: ... A government that allows secession will disintegrate into anarchy.

the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.