Why haven't taxpayers filed class action lawsuits to recover money lost to government fraud and mismanagement?

The clip highlights a significant discrepancy in accountability regarding government spending. While 14 states have initiated lawsuits against an individual to keep them 'out of the books,' there appears to be no equivalent taxpayer class action suit to recover mishandled funds, despite the Government Accountability Agency reporting staggering losses. According to the transcript, the federal government likely loses between $233 billion and $521 billion annually due to fraud. This raises important questions about taxpayer rights and the lack of mechanisms for citizens to reclaim their mismanaged tax dollars when government agencies fail to properly manage public funds.