an interesting idea....

I don't know where I originally heard of this idea, but I think it is a great one.

It has been put very simplistically that illegal things come into the US and cash goes out. This cash is then laundered and used over again. This can be stopped.

A secondary cash should be created that is only viable outside the US. So our normal green cash would be worthless if used outside the US and if is to be deposited outside the US is rejected. Only the new, secondary cash (let's say it is blue) can be used in any way outside the US. Corrupt bankers should now also be easier to find and shut down.

Going one step further all the 'blue' money would also have an RFID tag or something like that to scan and record it beyond just a simple serial number. I'm not ready for this step just yet.

Law abiding travelers and businesses dealing in cash will just go to the "cambio" like everyone else and make a legal, recorded in some cases, transaction. Yes it will be an extra step and yes it will be annoying but it would be worth it.

If Europe can switch currencies to one common one we should be able to handle the logistics of adding a second currency.

I think this is a great idea and should be implemented.