2 U.S.C. § 683: Rescission of budget authority

the amount of budget authority which he proposes to be rescinded or which is to be so reserved; any account, department, or establishment of the Government to which such budget authority is available for obligation, and the specific project or governmental functions involved; the reasons why the budget authority should be rescinded or is to be so reserved; to the maximum extent practicable, the estimated fiscal, economic, and budgetary effect of the proposed rescission or of the reservation; and all facts, circumstances, and considerations relating to or bearing upon the proposed rescission or the reservation and the decision to effect the proposed rescission or the reservation, and to the maximum extent practicable, the estimated effect of the proposed rescission or the reservation upon the objects, purposes, and programs for which the budget authority is provided. Any amount of budget authority proposed to be rescinded or that is to be reserved as set forth in such special message shall be made available for obligation unless, within the prescribed 45-day period, the Congress has completed action on a rescission bill rescinding all or part of the amount proposed to be rescinded or that is to be reserved. Funds made available for obligation under this procedure may not be proposed for rescission again.