The $9 billion fraud in Minnesota "for the children"

I've heard but not researched that some MSM are complaining that MAGA type citizens are overly concerned about $9 Billion fraud in child learning scandal in Minnesota. But I do know that the investigation began during the Biden administration, that the NYT has had a story about it, that local watchdog groups were investigating and the buck didn't stop at Walz's desk. He says he's been working on it, so why is $9 billion the tip of the iceberg and the learning centers are still open?