The dollar has helped make the U.S. the most economically powerful country for most of the last century, but other countries – including rivals like China – have the greenback on their sights.
The Treasury reviews some 24,000 cases a year and reimburses around $30 million to people whose money has been burned, flooded or otherwise damaged. This service helps underpin the dollar's integrity.
The euro has dropped in value against the U.S. dollar by more than 20 percent since last summer. But even as Americans find bargains in Europe, flights to get there remain pricey for a few reasons.
German automakers have several plants in the South, and Florida counts on European tourists. Analysts hope efforts to stimulate Europe's economy will keep investments in the U.S. from slipping.
The dollar's value keeps climbing. That's a sign of a healthy economy, especially compared with some of America's biggest trading partners — but it also has the potential to slow U.S. economic growth.
There are upsides to having global investors stash their savings in the United States. But their embrace of the dollar can start to feel like a death grip if it goes too far and chokes off exports.