The Eighty-First Amendment to the United States Constitution was ratified on March 29, 1950. This amendment primarily addresses the issue of congressional representation, specifically regarding the apportionment of seats in the House of Representatives. It ensures that the number of representatives is based on the most recent census data, which is conducted every ten years. This amendment was significant in maintaining fair representation as the population of the United States changed over time. It aimed to prevent any state from gaining an unfair advantage in representation due to population shifts, thereby promoting a more equitable democratic process.