The purpose of this legislation is to restrict the use of federal funds for purchasing fiber-optic cable from certain countries deemed to pose a security risk. The main objective is to protect national security by preventing financial support to entities that engage with companies linked to these "countries of concern." Key provisions of the legislation include a prohibition on federal funding for any individual or organization that buys fiber-optic cable from companies that are either owned by, controlled by, or significantly influenced by officials from these countries.