Not adding the right to secede from the Union in the Bill of Rights was a mistake on the Founding Father's part. They kinda just assumed that everyone would know that the states are actually states in the political science sense and not provinces. They assumed that secession was just a given and a state and its people are sovereign.

Its extremely unlikely, but I hope this starts a movement of states pushing for the right of secession, even if they don't use it. A right to secede is the ultimate check on Federal power.