In 1982 an American undergrad student argued that a constitutional amendment proposed in 1789 could still be approved by Congress. When he received a “C,” he started a letter writing campaign and got the amendment ratified. His grade was changed to an “A” in 2016.

Twenty-seventh Amendment to the United States Constitution

The Twenty-seventh Amendment (Amendment XXVII) to the United States Constitution prohibits any law that increases or decreases the salary of members of Congress from taking effect until the start of the next set of terms of office for Representatives. The amendment is the most recent to be adopted, but one of the first proposed.

It was submitted by the 1st Congress to the states for ratification on September 25, 1789, along with eleven other proposed amendments. While ten of these twelve proposals were ratified in 1791 to become the Bill of Rights, what would become the Twenty-seventh Amendment and the proposed Congressional Apportionment Amendment did not get ratified by enough states for them to also come into force with the first ten…
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Source: https://en.wikipedia.org/wiki/Twenty-seventh_Amendment_to_the_United_States_Constitution#Revival_of_interest