The United States blocked Thailand's first request for the WTO to set up an investigative panel in September. Under WTO rules, a panel is established automatically with the second request.
The U.S. said it was disappointed that Thailand had chosen to bring its case to the WTO because "members have the right to ensure that importers pay duties owed."
U.S. negotiator David Shark told the WTO's dispute settlement body that Washington was confident the panel would "recognize this fact and reject Thailand's claims."
Governments impose antidumping duties when they suspect that producers are exporting products at below the market price in their own country -- usually because exports have been subsidized or if it is believed there is an attempt to corner the market.
Source: The York Dispatch