A group of aides to members of the United States Congress will visit South Korea next week as part of the two countries' efforts to boost exchange and cooperation, trip organizers said Saturday. Eight secretaries of US Congress members including Sen. Richard Lugar, Sen. Jon Kyl and Rep. Steve King will arrive in Seoul on Sunday for a seven-day visit at the invitation of the Korea Foundation, foundation officials said, according to South Korea'snews agency (Yonhap).