South Korea has said it will not renegotiate a recently agreed free trade deal with the US.
The comments come amid reports that Washington may seek a number of amendments before ratifying the deal that was agreed on 2 April.
America's chief negotiator for the deal, Wendy Cutler, has been quoted as saying US Congress may want changes on labour rights and the environment.
No-one from the US trade department was immediately available for comment.
The deal aims to remove or lower tariffs on everything from cars to agricultural products, and the financial services sector. However, the deal excludes rice, which is one of Korea's main crops.
Democrat opposition
Korean trade minister Kim Hyon-Chong said he was aware of "certain movement going on between the US administration and U.S. Congress", but said "renegotiation is out of the question".
"Once a deal is done... it's done," he added.
The difficulty for George W Bush's Republican administration is that it will have to get any final deal approved by both chambers in Congress - the House of Representative and the Senate - both of which are now controlled by the Democrats.
The South Korean government has also faced opposition to the deal, with nationwide protests led by farmers.
If ratified, the trade deal would be the largest the US has signed since the 1992 North American Free Trade Agreement.
Trade between the two countries totalled $72bn (£37bn) in 2005, and is expected to increase by about 20% if the deal is passed.
http://news.bbc.co.uk/2/hi/business/6552511.stm
