S 201 · Signed into Law · 08-14-25
ACES Act of 2025
What does the ACES Act of 2025 do?
S 201 is a Senate bill sponsored by Sen. Mark Kelly (D-AZ). Orders an independent scientific study of how often cancer occurs, and how often it is fatal, among military members who served as aircrew on fixed-wing aircraft. The Department of Veterans Affairs must arrange for the National Academies of Sciences, Engineering, and Medicine to conduct it.
Did S 201 pass? Where it stands
As of July 17, 2026, S 201 has been signed into law on August 14, 2025.
Status: Signed into Law
Latest vote: House Passed by voice vote on July 21, 2025
Outlook: Enacted
Enacted: Signed into law on August 14, 2025
Key provisions
- National Academies Cancer Study
- VA must seek an agreement with the National Academies within 30 days of enactment
- Study covers cancer prevalence and mortality among fixed-wing aircrew
- Must report to Congress if the agreement is not finalized within 60 days of negotiations
- Scope of the Study
- Identifies exposures tied to aircrew occupations (chemicals, compounds, agents)
- Reviews 11 named cancer types, including brain, lung, prostate, and thyroid
- Uses VA, DoD, and CDC death-index data where available
Last updated June 26, 2026