The International Monetary Fund seal at the IMF in Washington, D.C.
The International Monetary Fund seal at the IMF in Washington, D.C. - 
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BILL RADKE: This weekend is the annual meeting of the International Monetary Fund in Washington. One of the contentious issues they're tackling: currency.

Marketplace's Stacey Vanek-Smith has ourstory.

STACEY VANEK-SMITH: Earlier this week, Treasury Secretary Timothy Geithner expressed his hopes for the IMF meeting.

TIMOTHY GEITHNER: We believe it's very important to see more progress by the major emerging economies to more flexible market-oriented exchange rate systems.

Um, right. What Geithner meant was that he wanted other countries to let their currencies gain value against the dollar.

ESWAR PRASAD: Giether's statement was directed squarely at China.

Eswar Prasad is a trade policy expert at the Brookings Institution. He says China and others, like Japan and Brazil, want to keep the value of their currency low, so their products will be cheaper for consumers in other countries. But Prasad says if countries like China keep their currency cheap, it could cause big problems.

PRASAD: If every country is trying to keep the value of its currency from appreciating, and we still do not have much job growth, this could start turning into more explicit protectionist measures.

Things like tariffs and limits on imports. Prasad says that could lead to trade wars and be very damaging to the global economy in the long run.

I'm Stacey Vanek-Smith for Marketplace.

Follow Stacey Vanek Smith at @svaneksmith