foreign exchange

The U.S. dollar is the strongest it has been in 20 years. As it strengthens, other currencies — like the pound — weaken. That's good news for U.S. consumers and importers but bad news for others.

After China let its yuan drop in value, the U.S. accused the country of being a "currency manipulator." Here is how China manages its money and what a dispute with the U.S. could mean.