§ 1553. Availability of appropriation accounts to pay obligations
(a)
After the end of the period of availability for obligation of a fixed appropriation account and before the closing of that account under section
1552
(a) of this title, the account shall retain its fiscal-year identity and remain available for recording, adjusting, and liquidating obligations properly chargeable to that account.
(b)
(1)
Subject to the provisions of paragraph (2), after the closing of an account under section
1552
(a) or
1555 of this title, obligations and adjustments to obligations that would have been properly chargeable to that account, both as to purpose and in amount, before closing and that are not otherwise chargeable to any current appropriation account of the agency may be charged to any current appropriation account of the agency available for the same purpose.
(c)
(1)
In the case of a fixed appropriation account with respect to which the period of availability for obligation has ended, if an obligation of funds from that account to provide funds for a program, project, or activity to cover amounts required for contract changes would cause the total amount of obligations from that appropriation during a fiscal year for contract changes for that program, project, or activity to exceed $4,000,000, the obligation may only be made if the obligation is approved by the head of the agency (or an officer of the agency within the Office of the head of the agency to whom the head of the agency has delegated the authority to approve such an obligation).
(2)
In the case of a fixed appropriation account with respect to which the period of availability for obligation has ended, if an obligation of funds from that account to provide funds for a program, project, or activity to cover amounts required for contract changes would cause the total amount obligated from that appropriation during a fiscal year for that program, project, or activity to exceed $25,000,000, the obligation may not be made until—
(A)
the head of the agency submits to the appropriate authorizing committees of Congress and the Committees on Appropriations of the Senate and the House of Representatives a notice in writing of the intent to obligate such funds, together with a description of the legal basis for the proposed obligation and the policy reasons for the proposed obligation; and