; (2) an assessment of the effectiveness of Chief Artificial Intelligence Officers; (3) recommendations for improving the implementation and effectiveness of Artificial Intelligence Governance Boards established pursuant to guidance issued under subsection (a) and Chief Artificial Intelligence Officers; and (4) other relevant matters, as determined by the Comptroller General of the United States. 6. Sunset Effective on the date that is 10 years after the date of enactment of this Act, this Act shall have no force or effect.