A bipartisan delegation of lawmakers plans to visit the United States later this month as part of parliamentary diplomacy aimed at supporting Seoul's peace efforts, the ruling party's floor leader said Friday.

"We're working on a plan where the floor leaders of ruling and opposition parties travel together to the US and meet with US congressional leaders and discuss trade issues, such as autos and tariffs, and peace issues, such as denuclearization," Rep. Hong Young-pyo, floor leader of the ruling Democratic Party, told reporters.

Hong said the current plan calls for a four-day trip starting on July 18.

Rep. Kim Sung-tae of the main opposition Liberty Korea Party said he's willing to join the trip.

"It has a great meaning in that we can meet the floor leaders of the Republican and Democratic parties and share their perceptions of the situation on the Korean Peninsula," he said. "I can go at any time if negotiations to form parliamentary committees are concluded smoothly."

Rep. Roh Hoe-chan, floor leader of the minor opposition Justice Party, has also voiced support for such parliamentary diplomatic efforts. Also expected to join the trip are Rep. Kim Kwan-young of the minor opposition Bareunmirae Party and Rep. Chang Byoung-wan of the Party for Democracy and Peace.

Ruling party officials said they're still working to set up meetings with US congressional leaders. (Yonhap)