[Toddsterpatriot]

That essentially what the U.S. does, in part, whenever the greenback is devalued

There is no fixed exchange rate, how do we devalue?

[USFRIENDINVICTORIA]

Here’s a link to an article that explains a lot.

http://www.forbes.com/sites/charleskadlec/2012/02/06/the-federal-reserves-explicit-goal-devalue-the-dollar-33/

The article is a bit dated, mainly because of the recent, and sudden drop in the price of oil, and the great increase in domestic U.S. production of oil and gas (the two are obviously tightly linked). Those events have bolstered the Greenback, at the same time as they hammered the Loonie. Nevertheless, the strategy remains intact.

A lot of countries want to move away from the Greenback as reserve currency; because of U.S. policies to devalue to, in essence, default on its debts.