I would look at the US$2BILLION(conservative figure) that I have to pay foreign countries for my imports EVERY DAY.
Then I would look at what it costs me to convince the world that the US$ is worth something. The best way of doing this is to make sure that anyone who has US$1,500 has the ability to buy 1 oz of gold or 1 oz of Silver for US$35.
If I don't do this, then very soon I will be paying US$4Billion every day for my essential imports - so, if it costs me 1 Billion per day to keep up the charade, then I am better off.
Of course, sooner or later everyone is going realize that the US$ is worthless and I can never repay them the money I am borrowing - well then ,I suppose, there's always the Brooklyn Bridge....