16 U.S.C. § 754c

Before, on, and after November 29, 1999 , in carrying out work under reimbursable agreements with any State, local, or tribal government, the United States Fish and Wildlife Service may, without regard to section 1341 of title 31 and notwithstanding any other provision of law or regulation, record obligations against accounts receivable from such entities, and shall credit amounts received from such entities to this appropriation, such credit to occur within 90 days of the date of the original request by the Service for payment.