Thanks, intent of the framers says it all!
But it has been under assault for 100 years. I urge you to read the Wiki entry on Randy Barnett and the details of his Bill of Federalism. A convention would hash all this out and the specific amendment would have to ratified by 3/4 of the legislatures. RAT proposals would go nowhere since they only have 20 states (or 27 if you count it Obama’s way.) :)