House Judiciary Investigates ACA Fraud: Insurers Subpoenaed

A deep dive into the House Judiciary Committee’s subpoenas of eight major health insurers and what they reveal about the contested terrain of healthcare policy

By Elena Pak, Credentialing Department, WCH

On February 9, 2026, House Judiciary Committee Chairman Jim Jordan issued subpoenas to eight of America’s largest health insurers, escalating what had begun as a voluntary information request into a formal investigation. The targets—Blue Shield of California, Centene, CVS Health, Elevance Health, GuideWell, Health Care Service Corp., Kaiser Permanente, and Oscar Health—collectively insure millions of Americans through the Affordable Care Act (ACA) marketplaces. The stated reason: concerns about fraud prevention measures related to ACA subsidies.

This investigation represents far more than a routine congressional inquiry. It sits at the intersection of legitimate program integrity concerns, partisan political maneuvering, and fundamental disagreements about the role of government in healthcare. Understanding the full context requires examining not just what Republicans claim to have found, but the economic incentives, structural vulnerabilities, and competing interpretations of data that define this debate.

The GAO Report That Started It All

The immediate catalyst for the subpoenas was a Government Accountability Office (GAO) report released in December 2025. The findings were striking: GAO investigators created fictitious identities and successfully obtained subsidized ACA coverage for 100% of applications submitted in late 2024. For 2025, 18 of 20 fake applications remained active as of September, with taxpayers funding approximately $10,000 per month in premium tax credits for these non-existent individuals.

The report detailed disturbing vulnerabilities:

Social Security Number Misuse: One SSN was used for 125 policies in 2023, representing 71 years of coverage across different plans. Over 66,000 SSNs showed records indicating more than 366 days of coverage in a single year.
Deceased Recipients: More than 58,000 SSNs receiving subsidies matched Social Security death records in 2023, including $94 million in advanced premium tax credits tied to households with deceased members.
Minimal Verification: In several cases, the marketplace requested documentation to support applications, but approved coverage even when GAO investigators failed to provide any documentation.
Unreconciled Subsidies: GAO’s preliminary analysis found over $21 billion in advanced premium tax credits for 2023 enrollees that could not be matched with IRS tax return reconciliation data.

The Centers for Medicare and Medicaid Services (CMS) received approximately 275,000 complaints in just eight months of 2024 from consumers reporting they were enrolled in plans or had their coverage switched without their consent. These unauthorized changes, often executed by rogue insurance agents seeking commissions, left consumers facing unexpected tax bills, loss of access to their doctors, or discovery of phantom coverage only when filing taxes.

The Phantom Enrollee Controversy

The fraud debate extends beyond outright fake applications into murkier territory: the phenomenon of “phantom enrollees.” Research from the conservative Paragon Health Institute has become central to Republican arguments against extending enhanced ACA subsidies. Their analysis claims 6.4 million people were improperly enrolled in fully subsidized plans in 2025—individuals either unaware of their coverage, ineligible based on income, or possessing other insurance.

The evidence they cite is dramatic:

Zero-Claim Enrollees: CMS data shows that 35% of all individual market enrollees had no medical claims in 2024, up from 19% in 2021. Among enrollees in fully subsidized plans with extremely low cost-sharing, the figure reached 40%—double the rate from three years earlier.

This represents approximately 11.7 million enrollees making no use of their coverage during the year. After accounting for legitimate enrollees who simply didn’t need care, Paragon estimates 3-4 million “phantom enrollees”—individuals either fictitious or unaware they were enrolled.

Demographic Data Collapse: In 2024 and 2025, exchanges lacked race or ethnicity data for more than half of enrollees—a dramatic shift from 2021. This suggests applications submitted with minimal information, consistent with brokers enrolling people without their full knowledge.

Income Category Anomalies: Nearly half of all exchange enrollees claimed income between 100-150% of the federal poverty level—the category eligible for fully subsidized “zero-premium” plans under enhanced subsidies. Yet Paragon’s analysis suggests millions more people enrolled in this category than actually have that income level.

The Other Side of the Story

The insurance industry and health policy experts contest this narrative vigorously. America’s Health Insurance Plans (AHIP), the insurers’ trade association, argues that the Paragon analysis fundamentally misunderstands how insurance markets function and misinterprets the data.

Healthy Enrollees Don’t Always Use Care: In any given year, approximately 23% of people with employer-sponsored insurance file no claims. Having people who don’t use their coverage isn’t evidence of fraud—it’s how insurance pools work. Younger, healthier people cross-subsidize sicker, older enrollees.

Enhanced Subsidies Attracted Younger Enrollees: The data shows the marketplace population became younger after enhanced subsidies took effect. Younger people are naturally less likely to use healthcare services frequently. A 25-year-old in good health might reasonably go an entire year without filing a claim.

Double-Counting Issues: Cynthia Cox, director of the Program on the ACA at KFF (Kaiser Family Foundation), notes that the federal data Paragon analyzed could count enrollees twice if they switched plans during the year. This would inflate the apparent number of zero-claim enrollees without representing any fraud.

Legitimate Changes in Program Design: The enhanced subsidies were explicitly designed to make coverage more affordable and accessible. Increased enrollment was the intended outcome, not evidence of failure.

CMS itself disputes many of the fraud claims. While acknowledging some issues with unauthorized enrollments by rogue brokers, the agency notes it has implemented multiple safeguards, including three-way verification calls for plan changes (implemented July 2024) and suspension of approximately 850 brokers in October 2024 (though all were eventually reinstated).

The Structural Problem: Perverse Incentives

Beneath the partisan rhetoric lies a more fundamental issue: the ACA’s premium subsidy structure creates powerful incentives for gaming the system.

How the Subsidy Mechanism Works: Advanced premium tax credits (APTC) are paid directly from the federal government to insurers, not to individuals. The subsidy amount is calculated as the difference between the benchmark plan premium and a sliding-scale percentage of the enrollee’s income. For individuals below 150% of poverty under enhanced subsidies, this percentage was zero—creating fully free coverage.

Why This Creates Problems:

Insurer Incentive: When insurers raise premiums, the government pays the increase while consumers see no change (or even a decrease) in their out-of-pocket cost. This removes the normal market check on price increases.
Broker Incentive: Insurance agents receive commissions for enrollments and plan switches. With zero-premium plans, there’s no consumer price sensitivity to overcome. An unscrupulous broker can enroll someone without their full knowledge, collect the commission, and the consumer faces no immediate financial harm.
Consumer Passivity: With no premium payment required, there’s no friction to catch erroneous enrollments. A person unknowingly enrolled continues to be auto-re-enrolled year after year because there’s no monthly bill they’d notice.
Limited Reconciliation: While enrollees are supposed to file tax returns reconciling their actual income with estimated income, GAO found over $21 billion in subsidies not matched with tax return reconciliation. Many people with very low incomes don’t file returns at all, and enforcement has been limited.

The Republican letters to insurers explicitly reference this structure, noting that it means “insurers collect more money from the government when they raise premiums, but consumers don’t see the cost increase when choosing a plan.”

The Premium Explosion

The cost data supports concerns about subsidy-driven premium inflation. According to analysis by the Joint Economic Committee, average gross premiums (adjusted for enrollee mix) increased 31% from 2021 to 2024, while average net premiums—what consumers actually pay—decreased 32%. For a 50-year-old earning $31,300 annually, taxpayers covered 93% of the premium in 2025, up from 80% in 2020 and 68% in 2014.

Total spending on premium tax credits approximately doubled after enhanced subsidies took effect, reaching an estimated $130 billion in 2025—roughly 60% higher than the Congressional Budget Office projected when these temporary pandemic measures were enacted. The subsidies were supposed to be temporary COVID relief, not permanent expansions.

Gross premiums for 2026 rose approximately 26% on average, despite the expiration of enhanced subsidies. This suggests the subsidies contributed to structural premium inflation, not just government cost increases.

The Political Context: Enhanced Subsidies Expire

The investigation cannot be separated from the political battle over enhanced ACA subsidies, which expired December 31, 2025. These pandemic-era expansions eliminated premium payments entirely for many low-income enrollees and extended subsidies to middle-class families.

Republicans allowed them to expire, arguing the subsidies drove fraud and waste while ballooning federal costs. Democrats pushed for extension, warning that more than 20 million Americans faced steep premium hikes. Negotiations in February 2026 to extend the subsidies collapsed, with Democrats involved claiming disagreements over abortion coverage contributed to the breakdown.

The subpoenas, issued just as these negotiations failed, appear designed to build the Republican case that fraud justifies opposing extension. Chairman Jordan’s letters suggest the committee is “investigating whether the APA [Administrative Procedure Act] needs to be reformed so as to ensure that important healthcare fraud prevention measures can be swiftly implemented.”

This references a controversial Trump administration rule from June 2025 that would have tightened enrollment verification requirements. A federal judge stayed major provisions of the rule in August, finding CMS violated administrative procedures in promulgating it. The administration has appealed.

The letters suggest Republicans may pursue legislative changes to circumvent normal rulemaking processes—a move that would align with the Trump administration’s January 2025 announcement that HHS would no longer seek public comment on a wide range of actions, a change critics viewed as reducing transparency.

What the Insurers Say

The eight subpoenaed insurers had varied responses to the initial December voluntary requests, according to Jordan’s letters. All provided some information, but Republicans deemed the responses incomplete, hence the formal subpoenas with a February 23 deadline.

When reached for comment on the subpoenas, Centene, CVS, Kaiser Permanente, GuideWell, and Blue Shield of California said they were fully cooperating with the investigation. Health Care Service Corporation said it was “committed” to fighting fraud and working with state and federal officials. Elevance and Oscar did not respond to media requests for comment.

It’s worth noting the irony: Republicans are simultaneously criticizing insurers for profiting from fraud while also demanding they provide evidence about their fraud prevention measures. The industry finds itself in an awkward position—accused of both benefiting from the current system and failing to prevent its abuse.

The Broader Healthcare Affordability Crisis

Lost in the fraud debate is a more fundamental question: Are these subsidies actually helping Americans access affordable healthcare?

The evidence is mixed. Yes, enrollment increased dramatically—but enrollment isn’t the same as access to care. If 35% of enrollees filed no claims, are they truly benefiting? And if gross premiums rose 31% in three years, is the subsidy approach sustainable?

Some policy experts argue the entire ACA subsidy structure is fundamentally flawed. By directing money to insurers rather than individuals, it concentrates spending power in corporate hands and removes consumer price sensitivity. Alternative proposals include:

Health Savings Account (HSA) Options: Allow lower-income enrollees to take cost-sharing reduction subsidies as HSA contributions, giving them direct control over healthcare dollars.
Meaningful Premium Contributions: Require all enrollees to pay some portion of their premium to restore price consciousness.
End Automatic Re-enrollment: Require active re-enrollment to prevent passive continuation of improper enrollments.
Verification Before Subsidies: The “One Big Beautiful Bill” passed by Republicans requires exchanges to verify eligibility before issuing advance subsidies, though this doesn’t take effect until 2028.

What Happens Next

The insurers have until February 23 to respond to the subpoenas. The information they provide will likely fuel additional hearings and possibly legislative proposals. CMS announced a proposed rule on February 9 that would tighten eligibility verifications and reintroduce program integrity measures blocked by the federal court.

But the deeper issues remain unresolved:

Can fraud be substantially reduced without making legitimate enrollment significantly harder? The GAO noted that even the three-way verification calls implemented in July 2024 had significant loopholes. Stronger verification inevitably means more paperwork, longer waits, and barriers for legitimate applicants.

Should the enhanced subsidies be extended? The data clearly shows they increased enrollment—but at significant taxpayer cost and with concerning levels of waste. Is this the right tradeoff?

What’s the appropriate role of insurers in preventing fraud? Insurers profit from enrollments, even fraudulent ones, since subsidies are paid regardless. Should they bear more responsibility for verification, or does that create an impossible conflict of interest?

Is the entire subsidy structure fundamentally flawed? If the payment mechanism creates such strong incentives for gaming, perhaps the problem isn’t primarily enforcement but design.

Beyond the Partisan Talking Points

The House Republican investigation has produced real evidence of genuine problems in the ACA marketplaces. The GAO report is damning, and the scale of unauthorized enrollments, misused Social Security numbers, and subsidies paid for deceased individuals suggests systematic vulnerabilities that transcend partisan exaggeration.

Yet the investigation also serves partisan purposes, providing ammunition against subsidy extension at a politically convenient moment. The “phantom enrollee” research from Paragon, while raising legitimate questions, extrapolates from zero-claim data in ways that many health policy experts find problematic.

The truth likely lies between these positions. Yes, there is fraud in the ACA marketplaces—more than defenders want to acknowledge. The enhanced subsidies, by eliminating consumer premium contributions entirely, created a perfect storm of perverse incentives. Unscrupulous brokers exploited these incentives, insurers collected subsidies with inadequate verification, and CMS failed to implement sufficient safeguards.

But not every zero-claim enrollee is a phantom, and not every improperly enrolled individual represents deliberate fraud. Some people overestimate their income. Some sign up for insurance and don’t use it—which is perfectly normal insurance behavior. Some are caught between changing life circumstances and complex eligibility rules.

The fundamental question isn’t whether fraud exists—it clearly does. The question is whether addressing that fraud requires dismantling subsidies that help millions of Americans afford coverage, or whether targeted reforms can preserve access while reducing waste.

That’s not a question that can be answered through subpoenas and partisan investigations. It requires careful policy analysis, recognition of tradeoffs, and a willingness to separate legitimate program integrity concerns from ideological opposition to government healthcare programs.

What the investigation has definitively proven is that the current system isn’t working as intended. What remains to be seen is whether Congress can move beyond partisan warfare to actually fix it.

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