All three cited sources are reachable and each documents the promise's outcome; every quoted line was confirmed verbatim. (1) Senate roll call vote #372 (July 1, 2025) is on passage of H.R. 1 and lists "Ricketts (R-NE), Yea"; the page shows the bill passed on a 50-50 tie broken by the Vice President's Yea (the rationale's "51-50" framing counts the VP, immaterial to the rating). (2) Ricketts's official press release carries the exact quote "This historic tax relief will continue to support Nebraskans and put more money in their pockets," celebrating the "Working Families Tax Cuts" (no tax on tips/overtime, a $6,000 senior deduction, and prevention of an average $2,400 tax increase on Nebraskans) — directly the working-family tax relief he promised to fight for. (3) Nebraska Public Media confirms the exact quote "The 'One Big Beautiful Bill' is gonna be great for Nebraska families," documenting his active public advocacy. This satisfies FULL: after the promise date (2024-11-08) Ricketts fought to deliver — via a decisive supporting vote plus post-passage advocacy — working-family tax relief that was enacted into law (signed July 4, 2025). CHAMPIONED is correctly NOT applied: no source shows Ricketts authored, sponsored, or led the tax legislation (he is not on Finance), so there is no evidence of the leadership CHAMPIONED requires; his role was one supporting vote and advocacy. Adversarial checks passed — no unreachable source, no fabricated quote, no outcome overstatement (the promise is narrowly about tax relief aimed at working families, and the enacted provisions provide exactly that; broader critiques about top-earner skew or Medicaid/SNAP cuts are context, not disqualifying).