This legislative proposal, known as the FIREWALL Act, aims to enhance the security of federal telecommunications investments by restricting the use of certain funds. Specifically, it prohibits Federal Communications Commission (FCC) and National Telecommunications and Information Administration (NTIA) funds from being allocated to individuals or entities that acquire fiber-optic cable from companies linked to "countries of concern." The prohibition applies if the fiber-optic cable is purchased from a company owned, in whole or in part, by a country of concern , its government officials, or any entity under its significant control. The term "country of concern" is defined by reference to existing law concerning "covered nations," and "fiber-optic cable" includes both solid-core and hollow-core types. This restriction will take effect for purchases made 90 days after the bill's enactment, ensuring a transition period for affected entities.