U.S. Secretary of Agriculture Tom Vilsack, from left, U.S. Trade representative Ron Kirk, U.S. Commerce Secretary Gary Locke and China's Vice Premier Wang Qishan, make a toast during the signing ceremony of the 20th China and U.S. Joint Commission on Commerce and Trade Thursday Oct. 29, 2009 in Hangzhou, China. AP Photo logo AP Photo 28 months ago

U.S. Secretary of Agriculture Tom Vilsack, from left, U.S. Trade representative Ron Kirk, U.S. Commerce Secretary Gary Locke and China's Vice Premier Wang Qishan, make a toast during the signing ceremony of the 20th China and U.S. Joint Commission on Commerce and Trade Thursday Oct. 29, 2009 in Hangzhou, China.