Both cited sources are reachable and support the FULL outcome. Fetterman promised (2022-09-05) that if elected he would immediately co-sponsor the PRO Act as written; he took office Jan 3, 2023. The promise verb was "co-sponsor," which the evidence confirms he fulfilled. The Sanders senate.gov press release (PRIMARY, March 5, 2025, the 119th-Congress reintroduction) explicitly names "John Fetterman (D-Pa.)" in the Senate cosponsor list, alongside Ruben Gallego, with Sanders/Schumer/Murray as introducers — directly substantiating the cited quote's substance (not fabricated). The NW Labor Press article (REPUTABLE_SECONDARY, March 2023) is verified verbatim: "S. 567 has 47 cosponsors—46 Democrats plus Maine independent Angus King." and states the only Senate Democrats not sponsoring were Kelly, Warner, and Sinema — supporting by elimination that Fetterman (a PA Democrat) cosponsored the 2023 bill (S.567). The outcome does not overstate the evidence: passage was not part of the promise, and FULL rather than CHAMPIONED is correct because Sanders led the bill while Fetterman merely cosponsored. Confidence is high but not maximal because the cited sources name Fetterman explicitly only for the 2025 reintroduction; the 2023 cosponsorship is supported by inference (NW Labor Press does not name him), though the promise is nonetheless clearly fulfilled by an explicitly documented PRO Act cosponsorship.