All three cited PRIMARY sources are reachable, their titles/dates match the rationale, and every quoted passage appears verbatim on the page. The promise is an advocacy/action commitment — to "fight to protect Social Security so seniors can retire in dignity" — and the outcome record after 2025-01-02 shows Luján doing exactly that: (1) Feb 7, 2025 he signed a 26-colleague letter demanding immediate implementation of the Social Security Fairness Act; (2) March 28, 2025 he publicly warned that attacks on SSA would endanger monthly checks for 500,000+ New Mexicans, stating he has "always fought to protect New Mexicans' Social Security"; (3) May 30, 2025 he wrapped a statewide tour focused on protecting Social Security, Medicare, Medicaid, and SNAP. FULL (not CHAMPIONED) is the correct rating: Source 2 confirms Luján "joined" Sen. Cassidy and 25 others as a co-signatory rather than authoring/leading the marquee legislation, so the evidence shows participation and sustained regional advocacy — genuine fighting — but not marquee legislative leadership. The outcome does not overstate the record; the promised action (to fight) is clearly and repeatedly demonstrated, even as the ultimate policy result remains in progress.