The Trump administration on Tuesday said it was deferring more than $1 billion in Medicaid payments to Minnesota and California because of “suspected fraud and noncompliance,” the latest in a series of punitive steps it has linked to allegations of fraud in mostly Democratic-led states.

Health Secretary Robert F. Kennedy Jr. said the new actions — which come after previously announced Medicaid funding deferrals in those states — are part of the administration’s strategy to “stop the fraud before it happens” rather than claw back problematic spending after bad actors are prosecuted, as previous administrations had done.

“We have a duty to stop the payments, demand answers and then follow the evidence wherever it leads,” Kennedy told a news conference.

The tactic is part of the administration’s sweeping campaign to show it’s cracking down on fraud and saving taxpayers money when rising healthcare costs and other economic stressors have made affordability a top voter concern in November’s midterm elections.