adopted by a majority of the whole number of each House, which becomes law. Any such waiver must identify and be limited to the specific excess or increase for that fiscal year made necessary by the identified military conflict. 5. The Congress shall implement and enforce this article by appropriate legislation, which may rely on estimates of outlays and receipts. 6. For purposes of this article, Gross Domestic Product shall be the sum of personal consumption expenditures, investment, government spending, and net exports, and shall be determined by the Bureau of Economic Analysis or any successor agency. 7. This article shall take effect beginning with the third fiscal year beginning after its ratification. .