The WTO upheld an earlier ruling that found US anti-dumping duties on shrimp imports from Thailand and India broke international trade rules. The US imposes these duties when it believes markets are being flooded with below-cost imports, but the WTO has consistently ruled the US excessively taxes foreign goods suspected of being dumped. Thailand welcomed the ruling as it will help its frozen shrimp exports to the US, which have been hit by the anti-dumping tax since 2003.