The Corwin Amendment was proposed in 1861 as an attempt to reverse the creation of the Confederate States of America and prevent further border states from seceding, and would have prohibited Congress from passing any laws that interfered with the “domestic institutions” of any state and which specifically referenced slavery. The amendment, which had no deadline attached to it, was eventually ratified by five states. The text reads:

No amendment shall be made to the Constitution which will authorize or give to Congress the power to abolish or interfere, within any State, with the domestic institutions thereof, including that of persons held to labor or service by the laws of said State.