A group of six U.S. congressmen will launch a South Korea-U.S. free trade agreement (FTA) working group on Wednesday.

The group, including Republican Dave Reichert and Democrat Adam Smith, said they will seek the swift ratification of the trade deal and will promote the benefits of the trade pact.

The congressmen said the South Korea-U.S. FTA is the most important trade deal the U.S. has negotiated with another country in the past 15 years. They added that they will inform the public about the benefits the trade deal will bring to the U.S. economy and will make preparations so that the FTA will be subject for prompt review by Congress.