The main purpose of this legislation is to change how the Land and Water Conservation Fund is used, specifically by preventing states from using federal funds to buy land or water from private landowners. This aims to ensure that the money allocated through this fund is not used for private transactions, but rather for public purposes. Key provisions of the legislation include a clear restriction that any state receiving financial assistance from the Land and Water Conservation Fund cannot use those funds to acquire land, water, or any interest in land or water from private individuals.