The greenback's strength has made it tough for U.S. businesses to compete overseas.
Foreign vendors often prefer to be paid in U.S. dollars instead of their local currencies. Others are adding energy surcharges.
Good for U.S. tourists and importers. Bad for exporters and fragile world economies.
Countries that import commodities priced in U.S. dollars, like oil, are paying a lot more. So are nations that have dollar-denominated loans.
A strong dollar means lower prices for goods from abroad. For countries that import commodities priced in dollars, however, it's bad news.