The reasons being... 1) Hyper inflation - plummeting value of any given currency. 2) "I promise to pay the bearer on demand the sum of ..." - in essence increasing debt of any given nation. It is a legal tender payable by the promisor to the promisee. ( Issuing nation to the bearer) Not to mention the fact that only printing money is whatever capacity does not mean a solution in itself. Money to be, act and perform what money does have to have following criterias: i) Stability in value. ii) Should act as medium of exchange such that it becomes a slandered of deferred payment. ii) Has a storage value. So on and so forth. There are countries that did as they pleased. History has taught us that printing money in abundance is not the solution. Say-like countries such as Argentina, Mexico and Brazil did try it in some way or form in the past with disastrous consequence. I was more curious if there are any laws that make each country abide by some kind of international law. I presume there must be some guidelines, but it is the prerogative of each nation to act as they please. Well not really, but they can if they want to. But at WHAT COST? Thus, the bottom line is, it is not that it is NOT possible, but just because it IS, does NOT mean one should. IndisGuise:)