Quite an eloquent explanation of how foreigners are subsidizing the American economy:

Many of the $100 bills circulating throughout the globe are essentially loans that we never have to pay back. Americans use them to buy goods, services, or other currencies. But many of those bills never return to our shores to be redeemed for anything we make or produce. Instead, they stay under mattresses in Bogotá, circulate in Iraq, and are stashed in bank accounts around the world.