Adversarial re-check confirms CHAMPIONED. The prior rating's weakness was sourcing — three of its four sources were Ernst's own press office, which is self-serving. I re-verified every load-bearing claim against independent sources and each one held. (1) DOGE Caucus chairmanship: independently confirmed by the Ripon Society ("Ernst Discusses New Role as Chair of Senate DOGE Caucus," Jan 2025) and The Epoch Times, not just her own site. (2) Legislative leadership that actually landed: her SBA Fraud Enforcement Extension Act (S. 1199) passed the Senate UNANIMOUSLY per independent reporting — she is the sponsor and chairs the Senate Small Business Committee. This is genuine sponsorship, not a single supporting vote. (3) Sustained programmatic leadership: the monthly Squeal Awards are real, ongoing (Pentagon waste, June 2026), and covered by outside outlets including The Epoch Times. (4) Direction-aligned voting: she voted YES on the July 17, 2025 rescissions package (51-48) that clawed back ~$9 billion, and spoke on the floor for it — so she did not merely talk. (5) The 2018 $15.4B rescission package is correctly quoted from Wikipedia. (6) Her Protecting American Taxpayers Act, a fraud package projected to save $240 billion with 12 cosponsors, was placed on the Senate calendar and brought up for a vote on July 16, 2026 — five days before this review, outcome not yet resolved, which does not affect CHAMPIONED. FULL is correctly ruled out: the macro objective plainly failed. The debt exceeds $30 trillion and her own page concedes each Iowan's share now tops $67,000; she also voted for the deficit-increasing 2017 Tax Cuts and Jobs Act. I tested whether CHAMPIONED is partisan leniency by asking whether an opposite-party senator with this identical record — signature campaign pledge, founded and chairs a dedicated caucus, publishes monthly waste reports, sponsors bills including one passed unanimously, votes for the actual cuts package — would get the same label. They would; the rubric awards CHAMPIONED for actively leading the effort 'even if not fully enacted,' which is exactly this record. Downgrading to PARTIAL would penalize her for the macro fiscal outcome the rubric explicitly does not require. One citation caveat, flagged rather than asserted: the prior rating cited the Protecting American Taxpayers Act as S. 4378, but secondary results also reference S. 4952 for the same package. Congress.gov and GovTrack both returned HTTP 403, so I could not confirm the exact bill number; the bill's existence, sponsor, cosponsor count and floor action are corroborated regardless. This discrepancy is a numbering ambiguity, not an invented source.