Abundant global liquidity and high exposure to capital movements have put foreign exchange intervention at center stage of the policy debate in Latin America. Although intervention is widely used, there is limited evidence about its effects on the exchange rate (particularly in terms of slowing the pace of currency appreciation). In the latest Regional Economic Outlook: Western Hemisphere we took a fresh look at intervention practices and effectiveness for a group of economies in Latin America and other regions during 2004-10. Our analysis suggests that foreign exchange market interventions may help to mitigate appreciation temporarily. However, the impact depends on the circumstances and characteristics of each country.