all or part of any funding or cancel any item of new direct spending or limited tax benefit, CBO shall prepare and submit to the appropriate committees of the House of Representatives and the Senate an estimate of the reduction in budget authority or change in receipts which would result from the enactment of the proposed rescissions or cancellations. 1014. Treatment of rescissions and cancellations Rescissions and cancellations proposed by the President under this part shall take effect only upon enactment of the applicable approval bill. If an approval bill is not enacted into law within 30 days from the enactment of the appropriation measure or new direct spending or limited tax benefit to which the approval bill relates, then the approval bill shall not be eligible for expedited consideration under the provisions of this part. 1015. Definitions As used in this part: (1) Appropriation measure The term appropriation measure means an Act referred to in section 105 of title 1, United States Code, including any general or special appropriation Act, or any Act making supplemental, deficiency, or continuing appropriations, that has been enacted into law pursuant to article I, section 7, of the Constitution of the United States. (2) Cancel The term cancel or cancellation means— (A) with respect to any dollar amount of discretionary budget authority, to rescind