The U.S. dollar has probably been the closest thing to a true global currency that the world has ever seen. For decades, the use of the U.S. dollar has been absolutely dominant in international trade.
This has had tremendous benefits for the U.S. financial system and for U.S. consumers, and it has given the U.S. government tremendous power and influence around the globe.
Today, more than 60 percent of all foreign currency reserves in the world are in U.S. dollars. But there are big changes on the horizon.