http://prospect.org/article/27th-amendment-or-bust
One afternoon in March 1982, an undergraduate student at the University of Texas named Gregory Watson was poking through the stacks
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the Congressional Pay Amendment
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Armed only with an IBM Selectric typewriter and postage stamps, Watson—who describes himself as "mistrustful of politicians, regardless of their partisan affiliation”—began sending letters to members of Congress, Senators, and state legislators, looking for sponsors for the amendment and champions who would push it through statehouses. In a pre-Internet era, this was painstaking work, Watson said, but it paid off. He needed 30 states to ratify the amendment, and before long the effort gained momentum.
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On May 7, 1992, the Michigan Legislature became the 38th State to ratify the amendment—enough to declare it approved (it was discovered later that Kentucky had actually already ratified the amendment in 1792, so Alabama was actually the 38th state to ratify on May 5).
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After the amendment was certified, Watson continued to press state legislatures for ratification, ultimately having 45 of the 50 states adopt it.