Acting Attorney General Todd Blanche announced Tuesday that the feds have charged hundreds of defendants in recent weeks for seeking to bilk taxpayer-funded programs out of $6.5 billion. In total, 455 defendants were hit with charges — including at least 90 medical professionals — and the government seized $182 million in cash and other assets from the alleged fraudsters. One of the cases involved an Arizona-based corporate executive who purportedly took $1 billion in taxpayer funds after billing the feds for "unnecessary wound grafts," charging up more than $1 million per patient, Blanche noted.