The main purpose of the Diversity Jurisdiction Inflation Adjustment Act is to update the monetary threshold for federal court jurisdiction in diversity cases to account for inflation. This change aims to ensure that the legal system remains accessible and relevant as the cost of living increases over time. Key provisions of the Act include raising the minimum amount in controversy required for a case to be heard in federal court from $75,000 to 50,000. This amount will be adjusted every ten years based on the Consumer Price Index, which measures inflation.