Verified against the cited sources. Two of three are reachable, both PRIMARY, and each independently documents genuine LEADERSHIP on the exact promise date (2023-05-15). GovInfo (U.S. Government Publishing Office) confirms Cory A. Booker as the SPONSOR of S.1606, the Black Maternal Health Momnibus Act, introduced May 15, 2023 and referred to the Senate HELP Committee; the bill text reads "Mr. Booker (for himself, ...) introduced the following bill; which was read twice and referred to the Committee on Health, Education, Labor, and Pensions" — Booker is first-named, i.e., the lead Senate author. His Senate office press release confirms he "Reintroduce[d] the Bicameral Momnibus Act" and quotes his statement verbatim ("This legislation is a critical step towards saving lives, ending disparities in health care and outcomes, and ensuring our health care system treats all moms with the care and dignity they deserve..."). This is authorship/leadership of the package, not a mere vote or co-sign, which supports CHAMPIONED over FULL/PARTIAL; the bill stalled in committee without enactment, so it is not FULL. The third cited source (congress.gov S.1606) returned HTTP 403 and could not be independently confirmed, but that is a well-known automated-access block rather than a fabricated or dead link, and every fact it was cited for (sponsor Sen. Booker, introduced 05/15/2023, referred to HELP) is corroborated verbatim by the authoritative GovInfo record. Both verified quotes appear exactly as cited. Confidence trimmed to reflect the one unverifiable corroborating link.