However, I do take issue with your assertion that federal government has "NO" power to repeal their ratification and thus secede. My evidence is perhaps anecdotal, and maybe even a little sketchy, but the Civil War laid to rest any reasonable notion that a state can do just what you say the federal government can't prevent them from doing. That the federal government has before done so, successfully, implies that it surely has at least one source of power to force the condition. Whether it's an ethical choice is a different matter. That the government has the power to do it is beyond question.