I have wondered if it would be permitted for individual states to remove their ratification of amendments. And if the number of states to pull their approval of an amendment (the 16th perhaps) is three quarters of the whole could the amendment be repealed by that means rather than going through the federal government.
It would make for an interesting states rights battle.
Precedent seems to be that once an amendment is ratified, it’s forever. The “equal rights” amendment was not ratified by the requistite 3/4 of states within seven years of introduction and was “deemed” to have failed. The Constitution does not impose a time limit, but by tradition an proposed amendment has seven years to be approved by the legislatures of 3/4 of the states.
If we’re in a repealing mood, I could go for the XIXth, the source of most of our troubles.