FYI: when you send a payment to the US treasury, in some way they are authorized to use the infomation on a paper check to perfom an ACH transfer for the amount on the check only. If so, they should then cancel the check. I would think that cashing a check AND using the info to do ACH is still illegal. If you pay someone $8000 and they take $16,000 that called theft in anyone's book and you should be able to have them arrested.
