In fact it's not and Mr. Madison was quite clear where that power was intended to lie. If we were to believe your premise about the Framers, their intent was to force all the states to accept New England Puritanism (which in fact wasn't the case)
That's why we have a Bill of Rights.
That's great. Course the Bill of Rights didn't apply to the separate and sovereign states until the 20th century and that took a SCOTUS packed with Progressives to divine that. Course that's what today's Republicans really are. Political descendants of early 20th century busybodies.
Of course next you'll start quoting from one of the first secessionist documents on this continent as if that proves your position...
So, you think states have the right to ignore/alienate inalienable rights. Why exactly do we have a federal union again, then?
Under your formulation, do states have the right to outlaw free speech? Ban all guns? Do away with free assembly and freedom of worship? Why not, if they have the right to abrogate the preemininent right, the right to life?