Homeland Security Secretary Markwayne Mullin threatened to jail state election officials if they do not comply with the Trump administration’s election integrity initiative.

Mullin is leading a new election integrity push known as the “Systematic Alien Verification for Entitlements” (SAVE) program. The program is part of the larger SAVE Act, which has stalled in the Republican controlled Senate due to a lack of support, even from Republican lawmakers in the upper chamber.

Asked by a right-wing reporter about the security of the November election, Mullin argued that states “have to do their part” and will face consequences if they don’t.

“If the states that choose not to participate with the SAVE program and they choose not to participate in securing the elections, we will make sure that we make those states a priority to look at who voted in their states and hold them, the election officials, accountable,” Mullin continued in a clip highlighted by Mediaite.

If the election officials, once we gave them the information they need to secure their elections and they choose not to, then those individuals can also be held accountable by fines, by penalties, and even, depending on how far it goes, prison time,” he added.

Mullin specifically threatened to withhold federal funding from four states, California, Pennsylvania, New Jersey, and Nevada, unless they comply with the SAVE program. Trump claimed in his primetime address Thursday night that DHS identified 250,000 noncitizens on voter rolls in those states.

“We are going to make our security enhancements mandatory, meaning that if these states want a grant and they want to be reimbursed to work or to run federal elections, they’re going to have to implement security issues,” Mullin said.

It’s unclear how DHS obtained the data or whether those individuals actually voted. While some voter registration records are publicly available, the Trump Justice Department has sued more than two dozen states across the U.S. for this type of data. All 15 judges who have ruled on those cases so far have rejected the requests as overly broad and without a clear purpose, Politico reported.

Nevada’s Secretary of State office called the numbers “wildly speculative at best,” adding that “DHS has not shared anything that backs it up.”

Pennsylvania Secretary of the Commonwealth Al Schmidt also doubted DHS’s numbers: “We welcome DHS sharing their methodology and list of potential ineligible voters so we can carefully review the validity of their claims.”

“California law is clear: You MUST be a U.S. citizen to vote state and federal elections,” California Gov. Gavin Newsom said on Twitter. “Voter fraud is EXTREMELY RARE — and almost always committed by U.S. citizens.”