The $40 trillion milestone is confirmed by an authoritative fiscal-policy primary source, the CRFB press release 'Gross National Debt Reaches $40 Trillion' (Aug. 19, 2026), and by PBS News 'The U.S. national debt now stands at $40 trillion' plus CNN's report the same day. The secondary element, gross debt exceeding 123% of GDP, is stated only by the Phemex aggregation of the originating X post and was not confirmed against an official GDP statistical release in this run. It is nonetheless arithmetically consistent with CRFB's statement that debt held by the public exceds $32 trillion and has surpassed GDP, which implies nominal GDP in the low-$30-trillion range and a gross debt-to-GDP ratio in the mid-120s percent. No source contradicts either element.