2 U.S. Code § 1904 - Certifying officers
The Chief Administrative Officer of the United States Capitol Police, or when there is not a Chief Administrative Officer, the Chief of the Capitol Police, shall appoint certifying officers to certify all vouchers for payment from funds made available to the United States Capitol Police.
The liability of the certifying officers of the United States Capitol Police shall be enforced in the same manner and to the same extent as currently provided with respect to the enforcement of the liability of disbursing and other accountable officers, and such officers shall have the right to apply for and obtain a decision by the Comptroller General on any question of law involved in a payment on any vouchers presented to them for certification.
2010—Subsecs. (a), (b)(1). Pub. L. 111–145 substituted “the Chief of the Capitol Police” for “the Capitol Police Board”.