Vance Threatens to Withhold Federal Funds from States Over Medicaid Fraud

On May 13, 2026, Vice President JD Vance stood at the White House podium and announced that the federal government would defer $1.3 billion in Medicaid reimbursements to California — the single largest such action in the program's history [1]. He then issued a warning to every governor in America: prosecute Medicaid fraud aggressively, or watch your state's federal health care dollars disappear [2].

The announcement marked the most dramatic escalation yet in a campaign that began in February, when the administration first froze Medicaid payments to Minnesota [3]. It raises fundamental questions about presidential power, the actual scale of Medicaid fraud, and the fate of 75 million Americans who depend on the program for their health care [4].

What the Administration Is Doing

The California deferment targets $1.3 billion in federal Medicaid reimbursements, with officials citing rampant fraud in the state's home health and hospice sectors [1]. CMS Administrator Dr. Mehmet Oz stated that the administration believes at least half of the hospices in the Los Angeles area are fraudulent, and announced that 800 hospice providers have been suspended — providers that collectively billed the federal government $1.4 billion in the prior year [5].

The action against California follows a pattern established earlier in 2026. In February, Vance announced the suspension of Medicaid payments to Minnesota, initially withholding $259.5 million in reimbursements for the fourth quarter of fiscal year 2025 [3]. The administration subsequently expanded its scrutiny to New York, Maine, and Florida, with CMS requesting information from all five states about potential fraud in their programs [6].

On May 13, Vance went further, announcing that the HHS Inspector General had sent letters to all 50 states requiring them to demonstrate that they are "effectively and aggressively prosecuting Medicaid fraud" [2]. States that fail to meet the administration's standards face having their federal Medicaid Fraud Control Unit funding cut off entirely.

Alongside the Medicaid actions, CMS imposed a six-month moratorium on new Medicare enrollment for hospices and home health agencies, during which the agency will conduct targeted investigations and deploy data analytics to identify suspected fraud [5].

The Dollar Amounts at Stake

To understand the scale of the threat, consider the numbers. The federal government spent approximately $610 billion on Medicaid in fiscal year 2025, covering its share of costs for 75.3 million enrollees across all states and territories [4]. California's Medi-Cal program alone serves more than 14 million people — roughly one in three Californians [7]. The $1.3 billion deferment represents a fraction of California's total annual federal Medicaid allocation, but it is large enough to create immediate cash-flow disruptions for providers.

Minnesota's case offers a preview. The state was told it would lose roughly $500 million per quarter in federal matching funds until it demonstrated compliance — a figure that Minnesota officials said could force cuts to services for elderly nursing home residents, children, and people with disabilities [3][8].

Nationally, Medicaid pays for approximately 40% of all births in the United States, covers roughly half of all nursing home care, and provides health insurance for more than 35 million children [4]. Any broad withholding of federal funds would ripple through each of these populations.

The Fraud Question: What the Numbers Actually Show

The administration's crackdown rests on the premise that Medicaid fraud is both massive and inadequately policed by states. The data tells a more complicated story.

CMS's own Payment Error Rate Measurement (PERM) program estimated the Medicaid improper payment rate at 6.12% for fiscal year 2025 — approximately $37.4 billion [9]. That figure rose from 5.09% in FY 2024, but remained below the 10% compliance threshold for the ninth consecutive year [9].

Source: CMS Improper Payments Fact Sheets

Data as of Jan 15, 2026CSV

The term "improper payment," however, is not synonymous with fraud. CMS defines improper payments as any payment that "did not meet CMS program payment requirements" — a category that includes overpayments, underpayments, and payments where documentation was insufficient to verify whether the charge was correct [10]. Of the FY 2025 Medicaid improper payments, 77.17% resulted from insufficient documentation, which CMS itself describes as "generally not indicative of fraud or abuse" [9].

The Georgetown University Center for Children and Families put it bluntly: "the improper payment rate is a measure of procedural errors — not a fraud rate, nor is it an accurate count of funds that were misspent" [11]. Many flagged payments went to eligible beneficiaries receiving legitimate services; the problem was that a provider failed to submit the right paperwork.

The Paragon Health Institute, a conservative think tank, has argued the opposite — that CMS's methodology actually understates the problem by measuring only a sample of claims and missing systemic patterns of abuse [12]. Paragon contends that the true rate of waste, fraud, and abuse exceeds what PERM captures, particularly in personal care services and home health programs.

States as Fraud Fighters: The Existing System

The administration's framing suggests that states have been negligent in prosecuting fraud. But every state already operates a Medicaid Fraud Control Unit (MFCU), federally funded and overseen by the HHS Office of Inspector General [13].

According to OIG's FY 2025 annual report, these units produced 1,185 criminal convictions and recovered nearly $2 billion — $1.3 billion in criminal recoveries and $706 million in civil settlements [13]. MFCUs returned $4.64 for every dollar spent by states and the federal government on anti-fraud enforcement [13].

Source: HHS OIG MFCU Annual Reports

Data as of Mar 1, 2026CSV

The FY 2025 criminal recovery figure was the highest in a decade, driven in part by a Virginia MFCU case that yielded $650 million alone [14]. MFCUs also secured 674 civil settlements and led to the exclusion of 900 individuals and entities from federal health care programs [13].

The GAO has identified areas for improvement. A 2023 report found that nearly 60% of Medicaid single audit findings were repeated from the prior year, suggesting that states were not fully resolving compliance problems [15]. GAO recommended that CMS make better use of state auditor findings to identify national trends and target oversight — a recommendation aimed at CMS itself, not solely at states.

Who Bears the Cost

If federal funds are withheld at the scale the administration has threatened, the consequences would fall disproportionately on the most vulnerable Medicaid populations.

Home and Community-Based Services (HCBS) — the very category the administration has flagged for the highest fraud risk — serve people with disabilities and older adults who would otherwise require institutional care [16]. Health Affairs researchers warned that targeting HCBS with broad funding suspensions could "endanger millions of people" who rely on home health aides to remain in their own residences [17].

The Center on Budget and Policy Priorities argued that the administration's actions amount to a "pretext to weaken the program and punish particular states," noting that the states singled out — California, Minnesota, New York — are politically blue [18]. The administration has disputed this characterization, pointing to its investigations in Florida, a Republican-governed state.

Medi-Cal covers more than 14 million Californians, including a large share of the state's children, pregnant women, elderly residents, and people with disabilities [7]. A sustained deferment of federal reimbursements could force the state to either absorb the shortfall from its general fund or reduce provider payments — which providers warn would lead to reduced access for patients.

The Legal Battleground

The administration's authority to withhold Medicaid funds without congressional action is contested. The Medicaid Act empowers the HHS Secretary to withhold funds from states found to be out of "substantial compliance" with program requirements, but the process typically involves administrative findings, hearings, and the opportunity for states to appeal [19].

Minnesota challenged the February withholding in federal court, arguing that the administration violated due process by taking hundreds of millions of dollars without proving noncompliance through discovery and an evidentiary hearing [8]. The state's complaint further alleged the action was "arbitrary, capricious and part of a pattern of political punishment" [8].

A federal judge denied Minnesota's request for an immediate injunction, allowing the withholding to stand while the case proceeded [20]. The ruling did not address the merits of the constitutional claims but found that the state had not demonstrated the irreparable harm required for emergency relief.

The constitutional landscape is shaped by NFIB v. Sebelius (2012), in which the Supreme Court held that Congress could not threaten states with the loss of all existing Medicaid funding to coerce them into accepting the ACA's Medicaid expansion [21]. Seven justices agreed that conditioning the entirety of a state's Medicaid funds on acceptance of a new program requirement constituted unconstitutional coercion — what Chief Justice Roberts called "a gun to the head" [21].

Legal scholars have debated how NFIB applies to the current situation. The Congressional Research Service has noted that while the federal government can attach conditions to grants, it cannot impose conditions that are so coercive they leave states "no real option but to acquiesce" [19]. Whether withholding a portion of a state's Medicaid funds — rather than all of them — crosses the coercion threshold is an open question the courts have not definitively resolved.

Administrative law professors have also questioned whether the executive branch can impose new compliance conditions without congressional authorization. The Medicaid statute sets out specific requirements for state participation; adding new conditions by executive action, rather than through legislation, raises Spending Clause concerns about adequate notice to states [19].

The H.R. 1 Factor

Congress has separately acted on Medicaid improper payments through the 2025 budget reconciliation bill. Beginning October 1, 2029, states that exceed a 3% eligibility improper payment rate will automatically have federal matching funds disallowed above that threshold [22]. This provision creates a statutory framework for addressing eligibility errors — distinct from the executive actions Vance has taken.

The Bipartisan Policy Center noted that the new law changes the PERM program itself, potentially shifting how improper payments are measured and what consequences follow [22]. Some health policy analysts have argued that the congressional approach — setting clear thresholds with defined penalties and an implementation timeline — represents a more legally durable path than unilateral executive withholding.

Historical Precedent

Prior administrations have used Medicaid oversight mechanisms to pressure states, but health policy experts say the current approach is without precedent in its scale and speed [6].

The Obama administration used Section 1115 waivers and compliance reviews to steer state Medicaid programs, but did not broadly threaten to withhold base funding from multiple states simultaneously. The first Trump administration raised concerns about Medicaid eligibility verification and proposed work requirements through waiver processes — several of which were struck down in court [19].

The current approach bypasses the waiver process entirely, instead using CMS's administrative authority to defer reimbursements while investigations are pending. Stateline reported that federal investigators are now looking to audit all 50 states' Medicaid programs, an effort that would be unprecedented in scope [6].

What States Are Being Asked to Do

The specific compliance requirements remain somewhat opaque. The HHS Inspector General's letter to states demands demonstrations of aggressive fraud prosecution, but does not define precise metrics for compliance [2]. States have expressed frustration that the goalposts appear undefined, making it difficult to know what actions would satisfy the administration.

The Georgetown Center for Children and Families documented that many states have invested significantly in anti-fraud infrastructure, including data analytics, provider screening, and cooperation with federal law enforcement [11]. The question is whether the administration's standard exceeds what states can reasonably achieve — and whether the cost of compliance exceeds the fraud losses it would prevent.

For states already operating MFCUs that return $4.64 per dollar invested, the administration's implicit argument is that this return is insufficient — that states should be doing more [13]. Critics counter that the existing system is working and that the withholding threats serve political rather than programmatic goals [18].

Who Is Responsible for Improper Payments

A central tension in the debate is who should bear accountability for Medicaid's improper payment problem. The administration has placed responsibility squarely on states, but the Medicaid system distributes administrative functions across multiple levels.

States administer Medicaid programs, determine eligibility, and oversee provider networks. But CMS sets federal rules, approves state plans, and manages the PERM measurement system. Managed care organizations — private insurers that states contract with to cover Medicaid beneficiaries — handle claims processing for a large share of enrollees. And providers submit the claims and documentation that determine payment accuracy.

The Center on Budget and Policy Priorities argued that blaming states for a "systemically distributed problem" ignores CMS's own role in setting eligibility standards, approving state plans, and overseeing the measurement systems that generate the improper payment figures [18]. GAO's 2023 report directed its recommendations at CMS, not at states, for failing to use available data to identify program-wide trends [15].

The Road Ahead

The administration appears committed to escalation. With $1.3 billion deferred from California, investigations open in multiple states, and all 50 states now on notice, the conflict between federal and state governments over Medicaid administration is entering new territory.

California Governor Gavin Newsom has signaled that the state will fight the deferment. Minnesota's lawsuit remains in litigation. Other states are watching closely to determine whether compliance, litigation, or political negotiation offers the best path forward.

The legal timeline is uncertain. Minnesota's case could produce appellate rulings that clarify the executive branch's authority to withhold Medicaid funds, but federal courts have been reluctant to grant emergency injunctions that would immediately restore funding. The H.R. 1 provisions do not take effect until 2029, leaving a gap in which the administration's executive actions operate in a gray area of legal authority.

For the 75 million Americans on Medicaid — and the providers, hospitals, and nursing homes that serve them — the practical question is whether the administration's fraud crackdown will strengthen program integrity or destabilize the system that delivers their care. The answer depends on whether the withholding of federal funds serves as a genuine enforcement tool or as a blunt instrument whose collateral damage exceeds the fraud it purports to address.