Well, a bond, like a CPN, is a promise to pay.
Rice McLeod was big on bonds, but hasn't talked much about them in a while. I think some institutions were stealing them and then still trying to get cash or check payments.
Not long ago, he said on his radio program that the bonds they used before was lacking in one key area, and that a former banker has helped them perfect it.
Here's a webpage that describes it:
http://tapes.ziby.net/index15.html
On the subject of levies, this might be interesting:
http://www.supremelaw.org/rsrc/banklevy/index.htm