What is happening to the value of the U.S. dollar these days? What causes the value of the U.S. dollar to rise or fall? Who demands U.S. dollar? Who supplies U.S. dollar? When we purchase German products, does our demand for euro go up or down? What are freely floating exchange rates all about, and how do they work? How can the falling U.S. dollar impact your travel expenses? Why would a cheap dollar relative to other nations' currencies be good or bad for U.S. trade?