Minnesota Gov. Tim Walz (D-MN) and Attorney General Keith Ellison acknowledged Wednesday that their state has been engulfed in a fraud scandal targeting federally funded social services programs, as House Republicans pressed them over what they described as delayed responses to massive schemes that could have siphoned off billions in taxpayer dollars.

The House Oversight and Government Reform Committee hearing came after Republicans released a report alleging the state’s Democratic leaders were aware of mounting welfare fraud in the state but failed to act quickly enough to stop it. The hearing revisited several scandals, including the $250 million Feeding Our Future child nutrition fraud case and alleged abuse across Medicaid, autism services, child care assistance, and housing programs.