The Trump Administration is escalating pressure on states to aggressively investigate and prosecute Medicaid fraud, warning that failure to comply with federal Medicaid Fraud Control Unit (MFCU) requirements could place both specialized anti-fraud funding — and potentially broader Medicaid funding streams — at risk.

The development comes amid a broader federal crackdown on Medicaid and Medicare program integrity led by President Donald Trump’s newly established Task Force to Eliminate Fraud, chaired by Vice President JD Vance.

On May 13, Vice President Vance announced that the federal government is deferring approximately $1.3 billion in Medicaid reimbursements to California, citing what the Administration characterized as a failure by the state to adequately combat systemic fraud.

“We’re announcing that the federal government is deferring $1.3 billion in Medicaid reimbursements from the state of California,” Vance stated. “And the simple reason is because the state of California has not taken fraud very seriously.”

Vance also announced that the Administration had issued letters to all 50 states demanding information regarding Medicaid fraud enforcement activities and warning that federal support for MFCUs could be jeopardized if states fail to demonstrate aggressive anti-fraud enforcement efforts.

“Today, we are sending, across 50 Medicaid programs, letters that will require them to show that they are effectively and aggressively prosecuting Medicaid fraud in their states — and, if they do not … we are going to turn off the money that goes to these anti-fraud units,” Vance stated.

The letters, signed by U.S. Department of Health and Human Services (HHS) Office of Inspector General (OIG) T. March Bell and sent to each state attorney general overseeing MFCUs, outline a significantly more aggressive federal oversight posture toward state anti-fraud operations.

Federal Government Signals “Business as Usual” Is Over

In the letter, the OIG states that some MFCUs “have been happy to rake in taxpayer dollars without fighting fraud” and argues that prior federal oversight had been insufficient.

The Administration states that, under President Trump and Vice President Vance, HHS will now require every MFCU to fully comply with all statutory and regulatory obligations in order to continue receiving federal funds.

The letter further warns that inadequate MFCU performance could create broader Medicaid compliance issues for states.

According to the correspondence: “Noncompliance with your MFCU obligations can take your State’s entire Medicaid program out of compliance.”

The Administration specifically cites federal statutory and regulatory authorities governing MFCUs, including 42 U.S.C. §§ 1396a(a)(61) and 1396b(q), as well as 42 CFR part 1007.

Potential Consequences for States

The letter warns that states whose MFCUs fail to meet federal requirements may face escalating enforcement actions, including:

• Corrective action plans or special recertification conditions;
• Reduction or suspension of MFCU funding; or
• Denial of recertification, which the letter states “could lead to the loss of all Federal grant funds provided to your State’s Medicaid program.”

Federal officials also indicated that direct reviews of state MFCU effectiveness and compliance will occur as annual recertification deadlines approach.

Broader Program Integrity Environment

The action represents the latest in a series of aggressive federal program integrity initiatives affecting Medicare and Medicaid providers.

The Trump Administration recently announced nationwide Medicare enrollment moratoria for newly enrolling home health agencies and hospices, along with separate moratoria affecting certain categories of Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS) suppliers.

Together, the actions signal a rapidly intensifying federal focus on provider screening, enrollment oversight, fraud detection, and state accountability tied to federal health care funding.

For Medicaid providers, managed care organizations, and state agencies, the latest developments suggest heightened scrutiny surrounding provider enrollment, claims oversight, investigations, ownership structures, and state enforcement performance moving forward.