; 132 Stat. 1918). (d) Updating of list The Commission shall periodically update the list published under subsection (a), as necessary to protect national security and to address changes in the determinations described in paragraphs (1) through (4) of subsection (c). For each 12-month period during which the list is not updated, the Commission shall notify the public that no updates were necessary during such period to protect national security or to address changes in such determinations. 3. Prohibition on use of Federal funds (a) In general (1) Prohibition Federal funds may not be used to purchase, rent, lease, or otherwise obtain any covered communications equipment or service or to maintain any covered communications equipment or service previously purchased, rented, leased, or otherwise obtained. (2) Timing Paragraph (1) shall apply with respect to any covered communications equipment or service beginning on the date that is 60 days after the date on which the Commission places such equipment or service on the list required by section 2(a). In the case of any covered communications equipment or service that is on the initial list published under such section, such equipment or service shall be treated as being placed on the list on the date on which such list is published. (b) Completion of proceeding Not later than 90 days after the date of the enactment of this Act, the Commission shall adopt a Report and Order in the matter of Protecting Against National Security Threats to the Communications Supply Chain Through FCC Programs (WC Docket No. 18–89) that implements subsection (a), to the extent such subsection applies to a program administered by the Commission. (c) Application to other agencies Not later than 180 days after the date of the enactment of this Act, the head of each Federal agency that administers a program through which Federal funds are made available shall update the regulations for the program to comply with subsection (a). 4. Secure and Trusted Communications Networks Reimbursement