All money fines imposed for the commission of an offense shall be in the nature of an assessment for the payment of designated court expenses. The fines assessed shall be paid over by the clerk of the court to the disbursing agent of the reservation for deposit as a “special deposit, court funds” to the disbursing agent's official credit in the Treasury of the United States. The disbursing agent shall withdraw such funds, in accordance with existing regulations, upon order of the clerk of the court signed by a judge of the court for the payment of specified expenses. The disbursing agent and the clerk of the court shall keep an account of all such deposits and withdrawals available for public inspection.