Nothing in the rules seem to indicate that you're not allowed to reassemble the shredded notes, or that you're not allowed to either use them as currency or req

Nothing in the rules seem to indicate that you're not allowed to reassemble the shredded notes, or that you're not allowed to either use them as currency or request replacement for your "damaged" currency. However, I am not a lawyer but I'd bet a court would rule that the act of shredding the currency was intended to permanently invalidate its use as currency, and any attempt to reverse that shredding via reassembly, combined with an attempt to pass off said reconstituted money as US currency, would constitute fraud. So while the rules don't seem to explicitly say you can't do it, it's implied that you can't.