This paper examines the determinants of "echoing" in antidumping (AD) cases (i.e., different countries sequentially imposing AD measures on the same product from the same exporter). We develop a dynamic game in which two competing importers can choose to impose an AD duty on a third exporting country in one of two periods, if at all. Assuming that governments are politically motivated (favoring their import competing industries), we find that a country imposes an AD duty in the first (second) period independently of the other country’s actions if its political-economy parameter is "very high" ("high"). Instead, it never introduces AD measures when its political-economy parameter is below a critical "low" threshold. Echoing occurs for interm...