There is so much inherently incorrect in this statement I have to borrow the comment from Wolfgang Pauli that you are "not even wrong."
The principle upon which this very country was founded is that People have a right "to dissolve the political bands which have connected them with another and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them".
Secession was not an accepted right of British colonies, nor was there a process in British law for doing so. The founders did not create such a right, they RECOGNIZED that this right, granted by God, already existed.
The right to leave a Union is implicit in our own nation's existence. We declared that we had such a right, the least we could have done was to recognize the very same right which we ourselves first declared!
You’re forcing your morality on Abraham Lincoln! Oh the horror!!!!!