I have to imagine there's a giant pile of (criminal) laws they could use to prosecute someone who's trying to defraud the government. But your point is still we

I have to imagine there's a giant pile of (criminal) laws they could use to prosecute someone who's trying to defraud the government. But your point is still well-taken, and it's kind of academic anyway - it's an incredibly valuable (and lucrative) tool for the government, of course they're not going to give it up.