What is the policy that was formally amended to the constitution and rescinded by formal amendment?

The policy that was formally amended to the Constitution and later rescinded by formal amendment is Prohibition, which was established by the 18th Amendment in 1919. This amendment prohibited the manufacture, sale, and transportation of Alcoholic Beverages in the United States. It was later rescinded by the 21st Amendment in 1933, which repealed the 18th Amendment and effectively ended Prohibition.