Military burn pits and the PACT Act: a toxic exposure t...

Sergeant First Class Heath Robinson was an Ohio National Guard combat medic. He served in Iraq and Kosovo, and near the bases where he worked, the military disposed of its waste the way it did across the post-9/11 wars: in large open-air pits, burning plastics, medical waste, electronics, rubber, munitions, and chemicals, often ignited with jet fuel. Robinson died in 2020 of a rare lung cancer. His family attributed it to the smoke he had breathed. Two years later, the law that expanded toxic-exposure benefits to millions of veterans was named for him.

That naming is the whole story in miniature. It is a story about a hazard the government created, a scientific problem the government could not solve, an evidentiary burden the government placed on the sick, and a bill that came due decades late and ran into the hundreds of billions. None of the pieces are simple, and the honest account keeps two things true at once: the harm was real, and the fix was large, fast, and fought over. This piece walks through both.

What the burn pits were

Across bases in Iraq, Afghanistan, and other post-9/11 deployment sites, the U.S. military burned much of its waste in the open air. According to the Department of Veterans Affairs, the pits consumed a mix that included plastics, medical and human waste, electronics, rubber, munitions, and chemicals, frequently lit with jet fuel. The smoke has been linked to respiratory illness and to several cancers.

The word "linked" is doing careful work there, and it matters for everything that follows. VA's own hazard page describes the exposure and lists covered conditions, but it does not claim to have traced any single veteran's cancer to any single plume of smoke. That link, at the level of an individual patient, is scientifically very hard to establish years after the fact. Hold that difficulty in mind, because it is the reason the old system failed and the reason the new one is built the way it is.

The scale of potential exposure is large. VA and the Department of Defense have estimated that as many as 3.5 million service members and veterans were potentially exposed to burn pits. That figure is an estimate of potential exposure, not a count of people who got sick. Variants circulate: some officials have cited numbers closer to 4 million. Exposure is not illness, and the 3.5 million should be read as the size of the population that stood downwind, not the number of the harmed.

Why the old system denied so many claims

Before 2022, a veteran who came home with a lung disease or a cancer and believed a burn pit was responsible faced a burden that was, in practice, close to impossible. VA generally required each claimant to prove a medical nexus: a demonstrated causal connection between a specific illness and a specific exposure that had happened years earlier at a base half a world away. You cannot retroactively reconstruct which molecules of smoke did what to which cell.

The denials followed. The strongest documented figure traces to the House Veterans Affairs Committee, where Representative Raul Ruiz cited VA data showing that between 2007 and 2020, VA approved only 2,828 of 12,582 burn-pit claims. That is roughly a 22.5% approval rate, or about 78% denied. News reporting has more loosely put the pre-PACT denial rate at around 70%. Either way, the pattern is the same, and its cause was not that the harm was fake. It was that the system demanded a kind of proof that the science could not supply.

That distinction is the hinge of the entire debate. The claims were not denied because veterans were wrong about being sick. They were denied because the rules asked them to litigate the unprovable.

Presumption: the mechanism, and what it does not claim

The PACT Act's central tool is legal presumption. If a veteran served in a qualifying place during a qualifying period and now has a listed condition, service connection is presumed. The veteran no longer has to prove the causal chain. The government agrees, as a matter of policy, to assume it.

It is essential to be precise about what presumption is and is not. It is a legal and administrative rule, not a scientific verdict. It does not prove that burn pits caused any particular person's cancer. It substitutes a policy judgment, that the harm is real and that individual proof is impossible, for a scientific one that no one can actually render. This is the same design the country adopted for Vietnam-era herbicide exposure in the Agent Orange Act of 1991, which built the presumption framework the PACT Act now extends. Presumption trades individual causal proof for an administrable rule. That trade is defensible precisely because the proof it waives cannot be obtained, but it does mean the program compensates a covered population rather than only individuals with demonstrated causal links.

What the PACT Act actually did

The full name is the Sergeant First Class Heath Robinson Honoring our Promise to Address Comprehensive Toxics Act of 2022, enacted as Public Law 117-168 and signed on August 10, 2022. Its reach is broader than burn pits, and calling it "the burn pit law" understates it. The statute:

Added 20-plus new presumptive conditions across burn pits, Agent Orange, and other toxic exposures. VA phrases it as "20+"; the count has since grown through VA rulemaking, with additional cancers added by regulation effective in 2024 and after, so some sources now cite higher totals. The original enumeration was 11 new cancers and 12 new respiratory illnesses for Gulf War and post-9/11 veterans, plus 2 new Agent Orange conditions, hypertension and MGUS, for Vietnam-era veterans.
Expanded and extended VA health-care eligibility for toxic-exposed veterans.
Required VA to offer a free toxic-exposure screening to every enrolled veteran.
Added presumptive-exposure locations for Agent Orange, including Thailand, Cambodia, Laos, and Guam, and expanded radiation-exposure presumptions.

In other words, it is a comprehensive, multi-era toxic-exposure statute. It reaches Vietnam as well as Iraq, herbicide and radiation as well as smoke.

VA also moved faster than the law required. The original statute phased in health-care eligibility over roughly a decade. Instead, starting March 5, 2024, VA administratively opened eligibility to millions of toxic-exposed veterans years ahead of that schedule.

The fight and the timeline

The path through the Senate in 2022 was not smooth, and the reason it stalled is worth stating plainly because it was a budget dispute, not a dispute about whether the veterans deserved help.

June 16, 2022: the Senate passed the bill 84 to 14.
July 27, 2022: a cloture vote failed 55 to 42. A technical revenue-clause issue had forced the bill back for re-passage, and in that window a bloc of Republicans objected to the mandatory-spending mechanism (discussed below).
August 2, 2022: after veterans and their families camped outside the Capitol, the Senate passed it again, 86 to 11.
August 10, 2022: signed into law.

The objection at the center of the July delay was about how the spending would be classified on the federal books, not about the merits of compensating sick veterans. That is a real and legitimate argument, and it deserves to be described accurately rather than caricatured.

The money

The cost is large, and the honest way to present it is to keep three different numbers separate, because they measure three different things. The Congressional Budget Office scored the bill at enactment, over the 2022 to 2031 window.

Deficit impact: CBO estimated the PACT Act would add at least about $277 billion to deficits over 2022 to 2031, driven mainly by increased mandatory, or direct, spending.
Mandatory spending increase: CBO estimated up to about $667 billion in higher mandatory spending through 2031. This is a different measure from the $277 billion deficit figure and should not be merged with it.
Reclassification: the law lets VA health spending above fiscal-year 2021 levels be funded as mandatory rather than discretionary, through a Toxic Exposures Fund. CBO estimated that up to about $390 billion of projected discretionary funding could be reclassified as mandatory over the period.

That $390 billion reclassification was the crux of the July 2022 delay. Critics, including Senator Pat Toomey, argued it would move a large stream of VA health spending off the annual appropriations process and thus out of routine congressional oversight. It is important to be fair here: the reclassification largely covers spending that would likely have occurred anyway. It is a budget-scoring and oversight dispute about how the money is booked and controlled, not a claim that the money is being wasted and not straightforwardly new spending.

Within the CBO estimate, the Committee for a Responsible Federal Budget, citing CBO, reported roughly $153 billion over a decade to expand VA disability compensation and roughly $102 billion over a decade to expand VA health-care access. Those component splits are consistent with the totals but are reported through CRFB rather than pulled from a primary CBO line item, so treat them as the well-sourced approximations they are.

One more caveat on the money: the figures above are the enactment-era estimate, not the final tab. By 2023, reporting indicated the realized and updated costs were running higher than the original score, on the order of tens of billions above expectations. The $277 billion to $667 billion range describes what CBO projected in 2022, not a settled final cost.

What the program has delivered

The clearest measure of what changed is the difference between the denial era and the years after. VA published two-year figures marked as of August 9, 2024. As of that date:

Veterans and survivors had filed 4,414,334 disability compensation claims across two fiscal years, of which 1,774,158 involved PACT Act conditions.
More than 1 million veterans and survivors had received disability compensation under the PACT Act.
More than $6.8 billion in earned PACT Act benefits had been delivered.
5,690,117 veterans had received free toxic-exposure screenings, and 739,421 had enrolled in VA health care.

Those numbers carry a specific date for a reason. They are the two-year marks as of August 9, 2024, and they keep rising. VA moved its biweekly PACT dashboard to a PDF-only format in April 2026, and some 2026 sources still recite the identical "$6.8 billion" and "1 million" figures. The true cumulative totals are now higher; the honest thing is to cite the 2024 figures as the 2024 figures and not dress them up as current mid-2026 numbers.

A note on the parts that are not VA presumption

The PACT Act also carried, as Title VIII, the Camp Lejeune Justice Act, which addresses decades of contaminated drinking water at the North Carolina base. It is easy to blend that into the burn-pit story, and it should not be. Camp Lejeune is a federal tort cause of action, litigated and settled through the Department of Justice and the Navy, not through VA disability presumption. It is different money, a different system, and different claimants. As of early 2026, DOJ-anchored reporting indicated roughly $708 million or more in approved settlement offers, against more than 400,000 administrative claims, meaning well under 1% had been resolved. The story there is the backlog, not a completed reckoning, and those tort dollars should never be folded into the VA benefit totals above.

The honest critique and the honest defense, side by side

The legitimate criticisms of this program are real, and none of them are about the veterans seeking benefits.

The first is delay. For roughly two decades the government both operated the burn pits and then, when veterans got sick, required each of them to clear an evidentiary bar that was effectively impossible. Denial on the order of 78% for 2007 to 2020 was the predictable result, and relief arrived only after a sustained advocacy campaign and people camping outside the Capitol.

The second is scale and scoring. A very large new liability was created quickly, with a contested budget mechanism that shifts up to about $390 billion off the annual appropriations process. Reasonable people can argue that spending of this size deserves the friction and visibility of yearly appropriations, and that argument is about oversight, not about whether the harm was real.

The third is the causation-versus-presumption tension itself. Presumption is defensible, but it is an honest substitution of policy for proof, and it compensates a covered population rather than only individuals with demonstrated causal links. That is a design choice worth naming out loud rather than papering over.

Set against those critiques is a defense that is equally honest. The harm is documented, and the government created it. It sent people to bases where waste was burned in open pits with jet fuel, and many came home with respiratory disease and rare cancers, some fatal. The old system denied so many claims not because the harm was fake but because it demanded scientifically impossible individual proof. Presumption is the honest answer to that impossibility: if you served where and when the exposure occurred and you have a listed condition, the country presumes it owes you rather than forcing you to litigate the unprovable. The cost is large, but it is the deferred bill for a hazard the government itself created and then denied for years, during which sick veterans died waiting. In two years VA screened more than 5.6 million veterans, granted more than a million claims, and delivered more than $6.8 billion to people who had been turned away.

Both verdicts are true. The delay was a failure of the system, the budget mechanics are a genuine and unresolved argument, and the underlying obligation, to the people who bore the cost of national policy, is real. The PACT Act did not prove that a burn pit caused Heath Robinson's cancer. No law could. What it did was decide that the country would stop demanding that proof from the sick, and would pay.

Fact-check notes and sources

Burn pits were open-air pits at U.S. bases (Iraq, Afghanistan, post-9/11 sites) burning plastics, medical and human waste, electronics, munitions, rubber, and chemicals, often ignited with jet fuel; smoke linked to respiratory illness and cancers. VA describes association and uses presumption, not proof of individual causation. U.S. Department of Veterans Affairs
As many as 3.5 million service members and veterans were potentially exposed; this is a government estimate of potential exposure, not a count of harmed or ill people. U.S. Department of Veterans Affairs
Full name: Sergeant First Class Heath Robinson Honoring our Promise to Address Comprehensive Toxics Act of 2022; named for an Ohio National Guard combat medic who died in 2020 of a rare lung cancer his family attributed to burn-pit exposure; enacted as Public Law 117-168 (vehicle S.3373 / H.R.3967). Congress.gov
Signed into law August 10, 2022. Honoring our PACT Act of 2022 summary
Core provisions: 20-plus presumptive conditions (11 cancers, 12 respiratory illnesses for Gulf War/post-9/11 veterans, plus hypertension and MGUS for Vietnam-era veterans in the original list); expanded health-care eligibility; mandatory toxic-exposure screening; added Agent Orange locations (Thailand, Cambodia, Laos, Guam) and radiation presumptions. VA states "20+" and has added conditions by later rulemaking. U.S. Department of Veterans Affairs
Accelerated health-care eligibility opened to toxic-exposed veterans starting March 5, 2024, years ahead of the statute's phase-in. U.S. Department of Veterans Affairs
CBO cost triad over 2022 to 2031: at least about $277 billion added to deficits; up to about $667 billion in higher mandatory spending; up to about $390 billion of discretionary funding reclassifiable as mandatory. These measure different things and should not be merged. Congressional Budget Office and Committee for a Responsible Federal Budget
Component splits reported by CRFB citing CBO: about $153 billion over a decade for disability compensation and about $102 billion for health-care access; the enactment-era score, with realized costs later reported running higher. Committee for a Responsible Federal Budget
Pre-PACT denial: VA approved 2,828 of 12,582 burn-pit claims from 2007 to 2020 (about 78% denied), per House Veterans Affairs Committee data cited by Rep. Raul Ruiz; news reporting also cites roughly 70%. Office of Rep. Raul Ruiz and Chief Healthcare Executive
Two-year figures as of August 9, 2024: 4,414,334 disability claims filed (1,774,158 PACT-specific), more than 1 million granted, more than $6.8 billion delivered, 5,690,117 screened, 739,421 enrolled. These are two-year marks, not current mid-2026 totals. U.S. Department of Veterans Affairs
Senate sequence: passed 84 to 14 on June 16, 2022; cloture failed 55 to 42 on July 27, 2022 (a re-passage triggered by a revenue-clause fix, with the mandatory-spending mechanism cited as the objection); passed 86 to 11 on August 2, 2022. Congress.gov all actions, S.3373
The presumption model traces to the Agent Orange Act of 1991 (P.L. 102-4), which established the statutory presumption framework for Vietnam-era herbicide exposure. Agent Orange Act of 1991 summary

Military burn pits and the PACT Act: a toxic exposure the government denied, then paid for