All three cited sources were fetched directly, are reachable, and are PRIMARY. (1) The govinfo S.192 bill-status source confirms Markey is the sponsor of the 'Restricting First Use of Nuclear Weapons Act of 2025,' introduced Jan 22, 2025, with the verbatim latest action 'Read twice and referred to the Committee on Foreign Relations' and confirms the bill has NOT passed the Senate or become law (still in committee) — the cited quote is a faithful composite of these confirmed facts, not fabricated. (2) The April 14, 2023 markey.senate.gov release confirms Markey's reintroduction of the Act and contains the exact quote 'No president has the right or the constitutional authority to unilaterally declare war, let alone launch a nuclear first strike.' (3) The Jan 24, 2017 markey.senate.gov release confirms Markey introduced the 2017 Act with Rep. Lieu, contains the exact quote 'Nuclear war poses the gravest risk to human survival,' and describes the bill as prohibiting a presidential nuclear first strike without a congressional declaration of war. The outcome does not overstate the evidence: the sources document sustained authorship and lead sponsorship (leading/driving the effort = CHAMPIONED) while confirming the bill never became law (ruling out FULL). CHAMPIONED is correctly applied and holds to the same nonpartisan bar. Retained rather than downgraded because every quote verified and the outcome matches the documented facts.