Adversarial re-check: all three cited sources were fetched live and each is real and on point; none were invented or misquoted. The promised action was a lawsuit, and it was filed. The Wyoming Governor's own bulletin (Dec 12, 2024) states Wyoming and Montana 'have filed suit against the Bureau of Land Management's (BLM) Buffalo Resource Management Plan Amendment (RMPA) that ends new federal coal leasing in the Powder River Basin,' on FLPMA and NEPA grounds, and confirms Gordon 'utilized Coal Litigation Funds appropriated by the Wyoming Legislature' to retain outside counsel (Consovoy McCarthy). Cowboy State Daily (Dec 12, 2024) independently confirms the suit was filed Wednesday Dec 11, 2024, that it seeks to have the plans thrown out as unlawful, and that Wyoming spent roughly $800,000 on outside representation. The stated objective also came to pass: Wyoming Public Media reports the Buffalo RMP was reversed by a Congressional Review Act resolution signed Dec 11, 2025, which 'reverted the Buffalo Field Office to its previous RMP, which allows new coal leasing if there is market interest.' Party-neutral test: this is an action promise ('sue X'), and the executive personally authorized, funded, and filed the suit, so the promised deliverable was 100% performed regardless of which branch ultimately delivered the reversal — the same record from a Democratic governor (e.g. suing an agency rule and having it later reversed) would equally rate FULL. CHAMPIONED (+0.75) would understate it, since that tier is for leading an effort that did not land; here the act was completed and the goal realized. I did not verify the prior rating's added claim that BLM 'formally terminated the RMPA planning process in 2026,' so I exclude it; it is not load-bearing. Confidence held at 0.93 rather than higher only because the small date discrepancy (filed Dec 11 / announced Dec 12, 2024) and the exact litigation-fund figure rest on the secondary source.