Gov. Tim Walz was hit with a subpoena this week that compels the Minnesota Department of Education to produce documentation relating to the state’s Feeding Our Future scandal.

In what federal investigators have called the nation’s largest pandemic aid fraud case, 70 people were charged in federal court with a scheme to steal $250 million in government funding that was meant to feed needy children.

More than a dozen people have already pleaded guilty in the scheme, and five of seven were found guilty by a jury in June.

But as the U.S. House Education and Workforce Committee continues its inquiry into what happened with the federal dollars provided by the Department of Agriculture, the Republican-led panel says the Minnesota Department of Education hasn’t been cooperative.“After MDE, under Governor Walz, failed to respond to previous attempts by the Committee to garner information necessary to uncover how the Governor and the USDA allowed such fraud to occur, the Committee today is proceeding with a subpoena to compel responses,” a committee news release said.

In the subpoena’s cover letter, Chairwoman Rep. Virginia Foxx, R-N.C., said Walz was “well aware” of the fraud and has a responsibility to ensure the MDE’s compliance with oversight.

“As the chief executive and the highest ranking official in the state of Minnesota, you are responsible for the MDE and its administration of federal child nutrition programs,” Foxx wrote. “You are well aware of the multi-million-dollar fraud that has occurred under your tenure as Governor.”

The subpoena also suggests that House Republicans, who have frequently used their majority to investigate and attack President Joe Biden, are pivoting to take aim at the new Democratic ticket of Vice President Kamala Harris and Walz, her running mate.

Walz has previously said that state employees were unaware of the misuse of funds.

“This wasn’t malfeasance,” the House committee letter quotes Walz as saying. “There’s not a single state employee that was implicated in doing anything that was illegal. They simply didn’t do as much due diligence as they should’ve.”

A Walz spokeswoman reiterated that in a statement to the New York Times.

“This was an appalling abuse of a federal COVID-era program,” the spokeswoman said. “The state Department of Education worked diligently to stop the fraud, and we’re grateful to the FBI for working with the department of education to arrest and charge the individuals involved.”

The subpoena demands Walz appear before the House Education and Workforce Committee on Sept. 18 and provide the committee with all documents relating to communications between the MDE and Feeding Our Future, communications regarding the MDE’s decision to resume payments to Feeding Our Future as well as communications between Walz and various state officials.

Other subpoenas were also issued to Minnesota Commissioner of Education Willie Jett, USDA Secretary Tom Vilsack and USDA Inspector General Phyllis Fong.

In June, a report from the Minnesota Office of the Legislative Auditor found “inadequate oversight” by the state education department led to the fraud.

The report found that state officials failed to act on warning signs at the nonprofit and that MDE didn’t exercise its authority to hold Feeding Our Future accountable.