Abstract: This paper explores the logic inducing the FED to extend unprecedented swap-lines to four emerging markets in September 2008. Exposure of US banks to EMs turned out to be the most important selection criterion for explaining the selected four swap-lines. This result is consistent with the outlined model. The FED swap-lines had relatively large short-run impact on the exchange rates of the selected EMs, but much smaller effect on the spreads. Yet, all the swap countries saw their exchange rate subsequently depreciate to a level lower than pre-swap rate, calling into question the long-run impact of the swap arrangements.