No mention whatsoever of secession in Madison’s Notes on Nullification, and he fully supported Thomas Jefferson’s 1798 Nullification concepts (which included the right of secession).
Here is from Madison’s notes on the very specific SC so called nullification trying to force other states to their singular will:
” Thus the right of nullification meant by Mr. Jefferson is the natural right, which all admit to be a remedy against insupportable oppression. It cannot be supposed for a moment that Mr. Jefferson would not revolt at the doctrine of South Carolina, that a single state could constitutionally resist a law of the Union while remaining within it, and that with the accession of a small minority of the others, “
When the federal government decides for itself to have NO constitutional restraint, the people of the states have a natural right to defend themselves and stop it. That’s it— period. No matter what the fakirs of the fedgov come up with for the permanent “Statists” living off the Nation’s wealth.
It is 1775 not 1861.